A Cry for Help

Disclaimer: I do not own Doctor Who's characters or Supernatural's. So yeah... just fanfic. Borrowing the characters to add a real spice of my flavor.

Author: Mabu
Rating: PG (for now)
Genre: Supernatural, Sci-Fi, Mystery, Romance.
Pairing: (pre-slash) Destiel. (canon) Amy/Rory.

Note: I've always avoided cross-overs for I am not always sure if a fan can do justice to two great fandoms and link them together realistically so, this is a big project for me. So, good luck to me. *takes a deep breath* It's like I'm diving into the unknown. Oh god, I'm scared.

Chapter One:

An Angel's pleas

Claire was watching TV idly when she heard it. It wasn't a sound; not quite a cry, but a moan and it reached for her. The remote she held in her hand dropped with a clatter as she gasped in surprise and dread, listening to the familiar voice in her head and it was only in her head, she knew that for sure.

"Your family is special." he had told her when he was attempting to convince her to consent to possessing her body. "You are special, Claire. You can see and hear the true visage of a holy being such as me and you can save your family. I can help you."

Claire was just a child, her mother would probably say in her defense and that was why, it was that much easier for Claire to give consent to the angel who had possessed her father's body three, four years ago, but if Claire had a say in it, she would say that she wished for the angel to remain in her and for her to protect her dad and her mom from the evil. She would be helping the angel exorcise those demons, what more could be better than that?

Unfortunately, it hadn't been as easy as Claire had imagined it would be and it was a horrible feeling to be stuck inside your own body and not have control of anything. And everything was dark. Claire had been relieved to have the angel take over her father again for a moment; before she had realized that she would never get to meet him ever again.

Ironic, she thought, that Castiel would call her the same way he had tried to call her father the first time. The TV flickered in front of her, weakly at first before wavering as the picture on the screen spun vertically and closed with a click.

She watched fearfully as she waited with bated breath for that voice again. She wasn't sure she heard the voice correctly before and she looked on to the TV curiously. When it looked like nothing was essentially wrong for the moment (for example: lights blinking in and out overhead or objects shaking in an unusual way), she glanced around for her mother. Her breath hitched abruptly as she realized that her mother had gone out for some grocery shopping a little while ago. She had forgotten about that. Her mouth felt too dry all of a sudden and she gulped as she turned back to the TV as if Castiel was in it.

Ridiculous. If the angel had to be anywhere, he would be up in the sky. And yet, what was this feeling?

Suddenly, another wave of the angel's voice came rolling her way. The lights overhead blinked in and out of existence this time and she watched the ceiling with a great deal of trepidation.

A whisper or a spark of wind caressed her cheeks as she concentrated on it, trying to relax under the fear and panic that was thudding in her veins.

"Dean." She heard and blinked, concentrating back again at the voice. "Dean." The heart-breaking, desperate sounding voice called out again.

Breathless and confused, Claire spoke without thinking: "I'm not Dean." She thought she knew the person being called out, but it was all a blur in her memory. Maybe, he was one of Castiel's human companions; the ones who had tried to save her and her family.

The voice stopped after processing this and before she knew it, she was saying: "Wait." She quickly leaped up on her feet, staring at the black screen of the TV with wide and suspicious eyes. "Where's my daddy?" she asked the only question she cared for.

She waited for an answer or just a little sign that Castiel was still there, but she felt it as the room went quiet and empty; the angel was gone.

She clutched at the cloth over her couch as she backed away back into sitting down and gritted her teeth, refusing to break down as she had done plenty of times before.

-0-

Castiel was stuck, of that he was sure. There was no such thing as the effort and strong will that Dean had kept preaching him about in this realm of immovable limbs and uncontrollable weight. He could not move.

Before the Leviathan had fully taken control of Castiel's body did he have to choose between two choices: did he want to live or die? Surprisingly, the answer didn't take much time to think about when Dean stood in front of him, not running - as Castiel had specifically told him to once the Leviathans had started to take control of him - and gaping fearfully. Dean, the foolish and reckless man that Castiel had come to know, seemed so befuddled and shocked that he couldn't have moved even when Castiel had told him to. He knew how stubborn Dean could be. But the man knew from enough experience as a Hunter to give up before his desperation opened doors to monsters. Unlike what Castiel had irrevocably done.

These weren't just any monsters though: these were Purgatory's worst and most wanted— hurtling and clawing at the edge of his consciousness. His mind was made up to stick around just a little while longer, so he could fix the mistake he brought to this world. And all he remembered since then was that he had switched his soul with that of his vessel.

Jimmy Novak was still not dead in the most basic manner, but he was a tired, broken soul of a man and just wanted to be free of the torture when Castiel took his place and he went out of the body as if in race against time and now, he was in Heaven, safe where Castiel had promised him to be. In his place though, Castiel was stuck in the body of the human vessel, and was able to fake his imminent death to the Leviathans' that were swirling around his body like nasty parasites.

Castiel pushed himself to the very back of the body's mind and hid there, waiting until the Leviathans' left him. In the lake, with the black, acidic liquid streaming out of the vessel's every orifice, Castiel held back the urge to panic because if he were human now than, he could not breathe underwater for long. When the Leviathans slowly and eventually left, his body had no strength of lifting itself up and he disappeared under the blanket of rivulets of the lake as it jostled and held him weighted under the gravity of his clothes.

The blackness had captured him moments later on and he had fallen under the lake fully, unconscious to anybody else.

He supposed he still had his grace left as he was very much alive, but his grace was slowly falling apart into pieces. Castiel was still underwater and unable to move his body. He was fortunate to keep this broken down grace still inside him and that the Leviathans hadn't notice him because right now, he would be useless against them. He would keep this grace as a gift, he decided, for Dean; to repay for his mistakes and fix the grace as he rested. He had things yet to recuperate.

Castiel tried for days on ends; at least, they felt like days and when he decided that he was truly far from moving out of the water, he called desperately with his grace reaching out as far as it could.

The only person he really wanted to call was Dean and so, in his incoherent and almost unconscious haze, his desire led his grace out to call for help.

He just hoped somebody could hear him before his grace ran out.

-0-

The Tardis was spinning through space, whirring with its usual noise made by a dissatisfied engine. Inside the ship that looked like a blue box were the Doctor and his companions, Amy Pond and Rory Williams. Amy and Rory were having one of their just-married arguments and the Doctor was smiling away as he checked the controls by the hub and essentially, took care of the Tardis.

"No, Amy, listen to me—"

"I won't, stupid face. What'll you do about it?" Amy had her arms crossed with that stubborn look on her face and it was Rory's losing battle, but he kept opening his mouth and closing it like a gaping fish as if he had something to say, but he didn't know how to say it.

Doctor smiled at the couple for a minute, but it dropped as suddenly as he heard a very peculiar sound calling out. Right after the unknown call, his Tardis shook to the core as the lights flickered on and off inside it. Amy and Rory looked around curiously, pausing from their unnecessary bicker and grabbed the nearest thing to hold onto to ride out the shaking. This had happened so many times that they knew by now not to be scared. Still, the Tardis was shaking strangely. Not like before when they were landing and recklessly traveling places in a hurry. They watched hunched over by their places as the Doctor ran to the exit of the Tardis and opened the door to the black, hollow and wide space with its millions of stars and supernovas. He leaned against the doorframe and perked his ears up to hear the voice again.

When he finally was able to hear it, he was only lead to more confusion. It was an unfamiliar and slightly choked voice that called out and it was repeating one name, place, or thing over and over again: "Dean."

DeanDeanDeanDean.

It had no pattern, just a word and it sounded a bit earthly to the Doctor, he couldn't tell why.

"Is Dean a common name for you?" Doctor asked, turning back to Amy and Rory as they were watching him cautiously from behind.

"A bit. Yeah." Amy responded with furrowed, questioning brows.

"Sounds a bit Irish." Rory gave his two cents with a shrug that was entirely too casual.

Doctor looked at them for a moment, thinking with that intense look that said I've-just-discovered-something-unusual-and-now-I'm-going-to-try-and-figure-it-out-before-it-kills-us that both were wary and excited to see. It meant another new and big adventure and that always got Amy going. Rory may not admit it— since he was always very protective of Amy after all the misfortunes they had faced— he was looking forward to this as much as her.

"Alright then." Doctor said, moving past Amy and Rory to the hub again. "Seems like we're going to where this voice came from."

"What voice?" Amy questioned.

"Concentrate on the space's noise, Amy, Rory." He instructed. Both wife and husband looked at him in confusion, but respectively went to the doorway, leaning their head to the side and listened.

"I don't hear anythi—" Rory was saying when he stopped himself, eyes widening as he looked at the space with his mouth opening to gape.

Amy's eyebrows were furrowed as she listened to the call of help in the waves carrying over and reaching out for everything and anything. This was a desperate call, but very disorganized and uncontrolled as the energy was exerting everywhere, no particular destination.

"What do you hear?" Doctor asked, going back to the screen of his Tardis and instructing it to chase the wave back to its origin. The Tardis was taking time processing the information so, Doctor looked back up again to check on Amy and Rory and found them staring at the space still with mesmerized and astonished expressions on their faces. The Doctor perked his brows curiously and looked at them. "What's he saying?"

Amy and Rory turned to him and Amy looked a bit strange.

"He's calling for help." Rory supplied instead of letting Amy say anything.

Amy hugged herself, arms bound around her as if cold all of a sudden.

"What's wrong?" The Doctor questioned her, worried now.

Amy shivered. "Nothing." She stared at him and said determinedly: "We need to help them."

"Help who?" Curious. Very curious. Why was Pond reacting this way?

Amelia looked startled and dropped her hands, as if coming out of a spell. "I-I don't know." She said, looking down with chagrin. "But it's like I knew for one moment what it was."

The Doctor and Rory exchanged looks. "Me too." murmured Rory mysteriously. "I thought for a moment that—" he paused, looking for the right words. "Everything made sense."

"Everything?" The Doctor didn't know what to say to that.

"Yeah. Everything about his voice." Amy agreed, nodding. Then, she looked surprised about something. "His name. I remember his name."

"What was it?" The Doctor asked urgently.

Amy looked conflicted as she hastily tried to remember it correctly. "Cas."

"Cas?" Doctor tried to make sure.

She nodded, her eyes a mixture of obscure urgency and disorientation.

The Doctor had the contemplative look in his eyes and he turned his head down as he thought about it. A jumble of thoughts, deductions, and reasoning went around his brain; too fast to be caught in the whirlwind of different and the many speculations jumbling around in his head.

"Doctor?" Amy said, which meant: what're you thinking?

The Doctor looked at her and spoke his thoughts, to organize them as much as give a summary of what was going around in his head to his companions: "An energy; pure energy is calling out in the deep space. There is a way to communicate through space— of course there is and I've often come across distress calls from special humans with the ability to call in the middle of space and time travel."

"So, this isn't unusual?" Amy asked, her eyes indicating she hardly believed that and added: "For you?"

Doctor's eyes flickered to her and to the hollow space before shaking his head, looking amazed at the knowledge of this new and unfamiliar voice. "These calls always come through some means: an object that is able to pick up thoughts or has a message stored within them meant for one person. For example, a psychic card or a box with a message. But this…"

"We can hear it." Amy completed as the Doctor paused to think about how impossible this was.

"It's like a speaker." The Doctor tried to explain, moving away from the hub and gesturing with his hands. "These technologies humans have built that are able to send messages by energies of certain kind to a particular point through tiny wires, circuits, joints, and—" a whoosh of air left the Doctor as he enlarged his eyes. He was in that phase where nobody should break his concentration or who knows what would happen. He was processing it along the way. He looked up and continued: "Imagine space; no energy, just tiny particles spreading along it by the fueling energies of the sun, or the stars— these energies are pure heat and valid. They exist and we know them for being responsible for certain things they do; like giving light to the planets or giving heat off."

"What're you trying to say?" Amy looked confused and irritated. Rory had much the same look, minus the irritation.

The Doctor looked at them with impossibly huge eyes, looking awed and mesmerized by the knowledge in his head. "Imagine if the sun had a voice." A silent beat. "And it was in pain. It was calling out— for help, for something to soothe its pain."

"You're saying the sun is calling us?" Amy questioned, raising her brows in disbelief.

"No, no, no." The Doctor shook his head in denial. "Now, that's impossible. The sun doesn't have a voice. It's a big ball of energy." He said with his voice wondrous. "And it's not particularly calling us. It's calling out, with no destination in mind."

"So what?" Amy asked impatiently, folding her arms with her eyebrows raised in expectation.

The Doctor paused and went back to the screen to check and there it was: the origin of The Voice.

Bootbock, Kansas.

It read.

November 2nd

2011

"Well, one thing is for sure: it's not the sun." The Doctor said, sounding relieved and as if he still had doubts about the thing being a big ball of energy.

-0-

They took off just after they got the origin of The Voice and Amy's question remained unanswered as the Doctor was still working through it. He had one or two theories in his head, she could see, but nothing must be substantial. He probably thought that visiting the place where this thing was would give him some idea. He looked so fascinated like he was getting candy that Amy rolled her eyes and gripped the railing tight as the Tardis started to shake in its usual way.

Once the Tardis stopped shaking, they knew they were at their destination. The Doctor exchanged looks with Amy and Rory before he walked up to the door, his companions following him out of the Tardis.

It was night and the Tardis was parked in the middle of an empty, deserted road. It was silent, except for the sounds of crickets. Amy looked around curiously and noticed a building to her left, looking for all intents and purposes, empty and haunted.

"We're going there?" she looked at the building pointedly as she asked the Doctor.

Doctor looked at the building for a moment too and nodded slowly. Maybe, he felt the same chill as she felt coming from the building. She had a bad feeling about this.

"It must be close to here." The Doctor said, probably noticing that there was nothing else worth noting except for the building.

They silently exchanged glances and walked towards the building, nervous jitters roiling their skins as they entered through the front door. It was dark, but not that dark that they couldn't see where they were going. After a certain time, they found themselves going through a narrow passage and entered a new room.

She heard Rory in the back moving around and glanced at him as he switched the light on. The light flickered on and they could see the room fully now.

"Wow. Creepy." Amy commented as she took in the sight. There were stains of blood everywhere on the walls and the floor. A hole gaped through the tiled wall's cement.

She heard Rory swallow and stared at him as he looked at her.

"Scared, stupid-face?" she asked quietly.

Rory shook his head and continued to stare into her eyes deeply.

They looked away soon after as they heard the Doctor moving away and followed him as he started walking through another narrow passage. The narrow passage, now that they could see clearly had cells (with bars) on both sides. That was why the passage was narrow and Amy could imagine now what the stench she had smelled before must be (the smell of burning and decay a mixture in the air). She covered her mouth and nose with her hand as they walked past the cells in a hurry with the Doctor looking around at the cells with that curiosity sparking within his eyes.

"Something's happened here." The Doctor murmured, mystified. Amy was amazed he could talk still in this stench without choking on his own bile and ignored the urge to hiss: "Of course, something happened, Captain Obvious."

The Doctor was ambling ahead of them already though and she muffled her groan of annoyance and walked after him quickly, wanting to get out of this place as soon as possible. Some minutes later, they came upon an exit that was partly opened. Knowing it for what it was, Amy urgently rushed to it, pushing it open and breathing outside air finally as she walked out. She soon realized after looking around they were on the other side of the building and saw a lake out of the corner of her eyes, with barbs separating it.

She looked back to where the Doctor stood, staring around just like her, trying to find something significant or worth noting.

"There's nothing here." She said with a shrug.

The Doctor shook his head, brows furrowed in confusion as he walked to where Amy stood. "There must be something." He mused, looking straight at where the lake was and squinting his eyes as he observed it with his complex thoughts bumbling around him.

"I don't hear the voice at all." Rory said, coming to stand by Amy's side.

"Well, maybe the voice got tired." Amy reasoned jokingly.

The Doctor's thoughts started to spark at that and he walked to the barbed wires separating the lake from them. The door with its yellow warning sign stared back at him. He looked down and picked something off the ground. When Amy and Rory came to his side, she saw it was a metal lock. The Doctor touched the barbed wire and opened the door they thought must have been locked. Rory and Amy exchanged surprised glances behind him and followed him as he pushed the door to the side and walked to the edge of where ground met the lake.

"You think it came from here?" she asked dubiously.

The Doctor glanced at her for a second before taking out his sonic screwdriver from his pocket and pointing it at the lake.

As the green color lightened on the tip of the sonic screwdriver and made that weird buzzing noise, Amy and Rory watched with horrified fascination as the water at the middle of the lake started bubbling all of a sudden. A flash of images passed through Amy's eyes again, just like the last time and she knew everything. The Angel and the human. The King of Hell torturing creatures and trapping them in the cells for interrogation later. The white smoke that entered and departed the angel. The pleading, painful face of Dean.

Amy gasped and came out of the frame of memories just as suddenly as it had hit her.

"Alright, Pond?" The Doctor asked beside her softly. She was turning to reply when she noticed Rory from the corner of her eyes, looking wide-eyed at the lake behind her.

She turned quietly to the lake again as she noticed the bubbling had stopped and a light was shining there instead.

"Doctor." She backed a step to stand beside Rory protectively, afraid. "What is that?"

"It's calling out." The Doctor said instead of answering her. "I gave it a message through my sonic screwdriver and I think it's giving me a sign in return about where it is."

"That- that light." She said and gulped. It was so surreal; the light was pure energy as the Doctor had before mentioned. Pure and shiny and it was as if it was calling out for her; there was no voice anymore, but it was still reaching her and warming her up to the idea of jumping into the lake and saving this creature that was asking for help.

The only thing that stopped her was that the white shine on the lake made her recall the same type of light coming from a body with its arms outstretched and its eyes a brilliant color of white light. In fact, she could see the different features of the body slowly, but eventually: the short dark, ruffled hair, the tan over-coat, the rough, callused hands and the mouth opening in a silent plea. In the middle of her lost recollection, she could hear the noise of water splashing and the Doctor's voice calling out: "Rory!" in urgency, but she was too busy memorizing the details. This was important, she knew. She needed to remember this so, that she could use this knowledge when they were in trouble. Whatever kind-of trouble they were in, she needed to know about this enigmatic creature.

She opened her eyes to see the shining light disappearing in front of her and saw Rory carrying a man in a suit with him as he swam back to the where Amy stood.

Her eyes widened as she realized what her husband was doing and she stood on the edge of the ground, stretching her arm for Rory to take.

"Rory." She called, not thinking about anything else. The strange, enigmatic man was of second priority to her husband and she would never let anything happen to him.

When Rory reached an appropriate distance from her, he grabbed her hand with his wet one and she pulled as he walked towards her while carrying the stranger with him. He panted and exhaled heavily as he finally came in front of her and she let him fall against her, the Doctor taking the stranger from Rory's arms soon after.

"Why did you do that?" she asked on his shoulder, her voice cracking. What if it was an evil monster instead of a drowning man? What would she do if it was a trap?

"I'm okay." Rory murmured as he hugged her. She closed her eyes, relieved for the moment and then, scrunched her nose when she noticed the salty smell of water on her husband. She pulled her head back and gave him a funny look.

"You're wet," she said and pulled away as he looked down at himself.

"Uh. Yeah." Rory lowered his head and rubbed the back of his head sheepishly.

"If you're quite over worrying about each other like mother-hens, can you turn your attention here for a moment?" The Doctor asked from where he was kneeling. They looked at him where he sat beside the body of the familiar man Amy saw in the memory that wasn't hers. He looked blue. She recalled just the moment how he had ended up here:

Black goo fell from his face as he walked toward the water. And with arms outstretched, he fell down into the lake. The sun was shining above the lake and three people standing at the far side of the lake watched him in sorrow, despair, and apprehension.

"I'm sorry, Dean."

Amy snapped out of the memory and found the Doctor looking worriedly at her. She looked back at Rory who was wearing the same expression as the Doctor.

"You didn't see that?" she asked Rory. As far as she knew, Rory was having the same visions as her.

Rory shook his head. "I don't know what you saw."

"Why? What are you seeing?" The Doctor asked the both of them.

"You didn't see it at all?" Amy questioned to make sure and when the Doctor just stared at her, she darted a look once more at the familiar man lying down on the ground, silent and not breathing. "He's the guy who called." She informed in case they hadn't already figure that out.

"He looks human." Rory knelt on the opposite side of Doctor, beside the body and stared at the man. "Shouldn't we be trying to get him back?" He asked.

Doctor gave him a look, like he didn't know what they should be doing. Rory huffed a sigh and positioned his hand on the man's chest before compressing on it lightly, over and over again. After a time, he moved his head to breathe air into the man's mouth and took turns in compressing the man's chest and breathing into the man's mouth. They watched as he repeated the procedure for the fourth time and Amy went to kneel by his side.

The man wasn't reacting at all. Come on. Come on. Amy thought desperately. She didn't know the man, but it felt like he had to be alive; he had to be.

"Dean?"

She looked on with surprise as she heard the voice; this time, it didn't sound so broken anymore and she looked at Rory's hand as he pushed at the chest heavily.

"It's working." Amy said, looking astounded. Doctor and Rory looked at her in question. "He's waking up, I think. Here, let me—" pushing Rory aside, Amy took position to compress the man's chest instead. "I think he's coming around."

Doctor leaned closer, eyes tracing her face watchfully. "Why do you think that?"

"I think- I don't know, but I think—" Amy compressed the man's chest rhythmically and picked up pace as she spoke: "I think he's talking to me."

"Who?"

She gave Doctor a funny look. "Castiel, of course."

The Doctor gave her a worried look and softly asked: "Whose Castiel?"

She stopped compressing the man's chest and looked up as sudden realization filtered through her. "An angel of the lord." When they just stared at her silently, she swallowed bile and looked back at the seemingly unconscious man-creature-angel thingy. "Well, not anymore." She didn't know where this knowledge was coming from.

"Angels exist?" Rory reacted a little too late, looking at the Doctor questioningly. "And I don't mean, Weeping angels, I mean, real angels with wings?"

"It's as much of a surprise to you as it is to me." The Doctor admitted. "There are things in this world that even a 900 year old Time-Lord can't know about."

"Yeah, I think I've heard you say that before." Rory said in a skeptical voice.

Amy pushed the new revelations on the back of her head and continued to compress the man-creature-angel's chest again. She could hear the tingle of someone in her mind, observing her and she felt like she wasn't just being paranoid, since she knew she had heard the voice in her head.

Whose Dean? She asked in her mind self-consciously.

All of a sudden, the body of the thing-man-angel's eyes flipped wide open and she stared in fascination at the depth of blue in them. He gasped and abruptly sat up, taking a long breath with his eyes enlarged and looking like they were going to pop out of his sockets any moment.

"Dean." He said then, breathless and she knew that he had heard Amy's question just now.

"I'm sorry." The Doctor said across from her. The angel-man thing turned to stare at him openly, intensely. "I'm afraid Dean is not here— whoever that is, but we're here and we're here to help."

"Who are you?" The voice was weak and dry, and Amy realized that this thing had been calling so far away, to space while it was drowning under a lake from here. How powerful would this creature be, if it could do such things?

"I'm the Doctor. This is Amy Pond and this is her husband, Rory." The Doctor introduced quickly, gesturing at them with a smile on his face. Amy could see his mind turning and turning in curiosity and the urge to know, know, know now. "But right now, the better question would be: who are you?"

The man-angel-thing froze and slowly looked between the three of them with a flustered look on his face. He parted his mouth for a minute and spoke after a pregnant pause: "I'm Castiel."

"Ok." The Doctor nodded in acceptance, keeping his dissatisfaction off his voice and looked up at Castiel with his own intense eyes. "What are you then, Castiel?"

The angel-man-thing who called himself Castiel blinked owlishly and tilted his head curiously. "A human." He murmured as if it was a surprise to him as well as anybody else.

Rory snorted by her side. "And you want us to believe that? After what we just saw?" He asked rhetorically in an incredulous tone.

The mass between Castiel's eyebrows furrowed like he didn't quite understand what Rory was talking about. "What did you see?" He poses the question back to him, in a very innocently curious voice.

They looked at him in disbelief and the angel-or-whatever stared back without blinking, looking so strange and clueless that the Doctor attempts to explain:

"Well, you were underwater for—I'm guessing, a long enough time that if you were human, you would have died." He says with cautious precision and when Castiel hardly looks surprised by the information, he plows on: "Your voice, we heard it echoing through space and it was pure energy. I may have lived more than nine hundred years, but I've never seen such a thing before."

Castiel's attention perked up at this and some of his earlier drowsiness appeared to have left him. "Nine-hundred years? That's a long time. Which planet do you come from?" He asked expressionlessly, his tone blank with a hint of detached interest.

The Doctor had the same dumb-founded expression on his face as Amy would have guessed was on hers and Rory's.

After a frozen minute of shocked silence, the Doctor replied: "Gallifrey."

The angel's eyes widened and squinted respectively at that. "I thought they were extinct. Unless—" he stared thoughtfully at the Doctor as if finally seeing him. For some reason, the expressions on his face seemed slightly endearing to Amy, even if this creature was becoming more and more incomprehensible every single moment that he talked. "You are The Doctor."

The Doctor nodded his head gradually, giving the angel a strange look. "Yes. I did mention that when I introduced myself, didn't I?"

Castiel seemed to sifting through his mind for some far-off memory and coming up blank. "You're not supposed to be here." He said mysteriously.

Doctor exchanged a glance with his companions before frowning funnily. "Well, I'm never where I'm supposed to be."

The angel suddenly closed his eyes, whether from the Doctor's words or his exhaustion, but whatever caused it made him appear remorseful. "I made a mistake." A beat. "I wasn't supposed to call out for help. I wasn't supposed to even be alive. I shouldn't have switched my soul with my vessel's just for my selfishness to save Dean."

"Is this Dean in trouble?" the Doctor asked with peaked interest. Somewhere in the jumble of words that the angel was spouting, of course the Doctor would focus where somebody's life was in danger.

"The whole world is." The angel's voice was gruff as he glared at the Doctor abruptly. Then, realizing that he was glaring, he lowered his gaze and looked away. "I'm sorry. I had no reason to call out like that. It was selfish and—"

"Yeah, yeah, we can discuss your selfishness and insecurities later. Now—" the Doctor leaned over, his nostrils flaring and the angel met his stare evenly as they met face-to-face. The angel didn't even blink. "What's this about the whole world being in danger?"

The angel's exhale was sharp as he backed away, as if bitten and averted his intense gaze away from the Doctor. "I set them free."

"Set who free?" coaxed the Doctor as if talking to a child.

"The Leviathans."