"Tell me what we got."

"Err, Ok. So, guy beat his wife's brains out with a meat tenderizer." Sam said, flipping through the papers. Dean glanced over at him before turning back to watch the road.

"So, what, the guy just snapped?" Dean snapped for emphasize. Sam gave him a look. Dean just smiled, amused. He knew Sam wouldn't appreciate that. It's why he did it.

"Maybe." Sam said. "But get this. He's not the first. Two other husbands have killed their wives in the past two months. No priors on any of 'em, all happily married."

"Oh fun fun." Dean said, tugging on his tie as he got shifted his car to park and got out. Ties don't normally bother him this much, but he has been on edge ever since Anna. Ever since Castiel.

He ignored the look that Sam sent his way, that told him that Sam knew exactly what was bothering him. He just started walking towards the precinct.

"All right, well I guess we'd better have a look."

xXx

Dean ran a hand through his hair, ready to leave the precinct behind. The guy gave them a lot, but also felt like he gave them nothing.

"So this guy meets a stripper, falls in love, and murders his wife for her." Dean said, glancing back at his brother. "That seems almost shut and closed. The guy's just an idiot."

"Yeah, but two other times? Two other guys?" Sam asked. "Plus, Jasmine isn't even here. Surely they should have called her in?"

"Yeah, you're right." Dean sighed. "It's never shut and close."

They fell silent as they got to the car. Dean didn't quite like the silence but didn't know how to break it. But he knew he needed to, as the longer the silence went on, the more likely that Sam would bring up something he didn't want to talk about.

"Dean, we need to talk about this." Sam suddenly said as they got onto the main road and Dean could curse. He knew it.

"Yeah, we need to talk about what to do next." He countered easily, trying to stop himself from showing anger. Sam would only push harder if he knew that.

"Dean." Sam tried again. Dean just talked over him.

"What do you think? Strip Club, or morgue?" He asked, getting at a stop light. He wasn't actually lying, he needed to know where to drive. "Should we go try to find this Jazmine?"

"Dean." Sam snapped, glaring at him. "We need to talk about Cas."

"There's nothing to talk about with Cas!" Dean snapped back. He made an executive decision and turn to go to the hospital. "He made his choice!"

"What choice?" Sam asked. "He was scared to tell the truth-"

"That doesn't matter! He should have told us, he should have trusted us, and now it turns out he's an angel? Like those dicks Balthazar and Uriel? I have nothing I want to say about Cas!"

Sam fell silent. Dean felt a little bad for yelling, but it got his brother to shut up, so he would take it. The silence lasted this time until he parked in the parking lot of the hospital.

"Come on." He said shortly, getting out of the car. After a moment, he heard Sam follow.

xXx

"So all three men had love drugs in their bodies?" Dean asked as they left the hospital. He wasn't pouting about being cockblocked, not at all.

"That's what Dr. Roberts said." Sam answered. He sighed. "So Whylie and Snyder totally fessed up, huh?"

"Yep. One emptied his IRA, the other, his kids' college fund, all on the same day."

"Live nude girls?"

"A club called 'The Honey Wagon'." Dean smirked. "Are you ready to go?"

"These guys have affairs too, with a stripper also known as Jasmine?" Sam asked, totally ignoring him. Dean sighed.

"Yes and no. This is where it gets interesting. Each guy hooked up with a different chick."

Sam stopped walking, turning to face him. "So, what? These girls all connected somehow?"

"Well, they all described their stripper in the same way, the exact same way. Perfect, and everything that they wanted." Dean said. "They all sounded like they were in love."

"And then Barbie got them to kill their wives." Sam continued, sighing. "You know, it's almost like they were under some kinda love spell."

"Sure seems that way."

"Which caused them to become totally psychotic."

"Yep!" Dean said, getting into the car. He was trying hard not to grin. Sam gave him a look.

"Why are you so happy?"

Dean actually did grin at him, determined to be happy about something. "Strippers, Sammy. Strippers. We're on an actual case involving strippers. Finally."

xXx

"Well, the manager's a bust." Dean said, sighing as he sat down. A strip club and he couldn't even enjoy the girls.

"Course he is." Sam said, looking up from his laptop. "But I just off the phone with Bobby. He was doing research for a case Cas was on," Dean frowned at the name. "But he still gave me a few answers. So now I got a theory."

"And what's that?"

"A Siren." Sam said, a little proudly.

"Like Greek myth siren, the Odyssey?" Dean glanced away before looking back at Sam. It took a minute, but he recognized the look Sam was giving him. He frowned, offended. "Hey, I read!"

"Yeah, actually." Sam said slowly, before looking back at his laptop. "But the siren's not actually a myth, it's more of a beautiful creature that preys on men, enticing them with their siren song."

"So, what, they hypnotize men to do their bidding?" Dean asked. "And… what is their bidding? Besides murder."

"I dunno why they do it, but they do." Sam said. "And if you were a siren in '09 looking to ruin a bunch of morons, where would you set up shop?"

Dean stopped and looked around. After getting thoroughly distracted for a second, he looked back at his brother. "So whatever floats the guy's boat, that's what they look like?"

"Yeah." Sam agreed. "Sirens can read minds. They see what you want most and then they become that. Makes things easy."

"So, what, it's all the same girl?"

"Yeah, actually. Probably. Sirens are usually pretty solitary."

"Huh." Dean said, then fell quiet, thinking. After a moment, he spoke back up. "Then how do we kill it?"

"Bobby… doesn't know." Sam said. "He said he'll look into it and have Cas help when he's done with his hunt." He paused. "The real issue is-"

"Finding the damn thing." Dean said, glancing at the women dancing again. It didn't even make him happy. Why couldn't anything ever be easy?

xXx

Dean opened his phone and clicked through the contacts to Cas's name. He sat there, staring at the name with his thumb over the call button, before sighing and flipping his phone shut.

He ran a hand over his face. This was the fourth time tonight that he had done that. He just… make himself call Cas. Couldn't face him. Because facing him meant facing what made him angry in the first place and… He threw his phone backwards, onto the bed. He couldn't look at it anymore.

Glancing over at Sam's bedside table, he saw a different phone. He hesitated only a moment, before getting up and grabbing it. Scrolling through his recent contacts, he quickly spotted an unknown number. Not giving himself a chance to talk him out of it, he clicked the call button and held it to his ear.

"Hey, Sam." Came the voice of Ruby's new vessel. Dean couldn't force words out of his mouth. "...Sam" She questioned, voice getting a suspicious edge. "You there?"

He hung up, unable to listen to anymore. He was pathetic. He could make a call to the bitch Ruby, but not to his best friend? What was wrong with him? And what was wrong with his brother to still be talking to that demon?

He hid his head in his hands only for a moment, before hearing the door start to open. Quickly sitting up and throwing the phone on Sam's bed, he looked up as Sam came in.

"Ok, so SAM enters.

SAM

Lenny Bristol was definitely another siren vic." He said, coming in and sitting on his bed.

"DEAN

You gotget in to talk tosee him?" Dean asked.?

"SAM

Yep." Sam gave him a look that shared all the issues he had with that guy. Dean could only assume how sad and insane he sounded like. ". He bought home a stripper named Belle. Couple ofCoupla hours later he offed his mother. Belle, of course, went MIA.".

"DEAN

Wait, he killed his mom?" Dean asked. "His mom? Like, what?" Sam just shrugged.?

"SAM

The woman he was closest too, I guess." He said. He looked like he was going to say more before he was cut off by his phone ringing. Dean glanced back at it, before rubbing his face, trying to act natural.

"Yeah, you, you forgot your phone." He said, leaning back. Sam gave him a look that said that he knew that Dean was up to something, before reaching back to grab it.

"Hello?" Sam answered, before frowning. "Hey Bobby…..No, we haven't found her yet. And, uh, it doesn't seem like she's slowing down any. You got anything?... Hang on a sec."

Dean watched him put the phone on speaker before scooting over closer to his brother.

"It says you need "a bronze dagger, covered in the blood of a sailor, under the spell of the song"." Bobby said. Dean could hear the sound of pages turning. "I might have more if Casly would stop moving my books."

"Organization Dad!" came Cas's voice from a different room. Dean assumed it was from the kitchen, based on where he assumed Bobby was.

"I have organization!" Bobby snapped back, before talking to the brothers again. "But you got me on what it means. We're dealing with 3000 years of the telephone game here."

"Best guess?" Sam asked, sharing a look with Dean. Dean wanted to groan. Why were things never easy?

"Well, the siren's spell ain't got nothing to do with any song. It's most likely some kind of toxin or venom. Something she gets in the vic's blood." Bobby said. "I think it's the blood mix. Casly thinks maybe it's just the venom itself, and no victim is required."

"So we either need a victim," Sam started.

"Or we need to find the siren." Dean finished. "Preferably before she infects someone else."

"That's not going to be easy." Bobby said. Sam just hummed.

"I think I might have an idea."

xXx

"So you said you need the blood samples from before?" Dr. Cara Roberts asked, looking at the two men confused outside of her office. Sam couldn't blame her. It was a weird for people to ask on cases such as this, even for FBI agent.

"Yes, ma'am." Dean said, giving Cara a smile. Cara didn't seem to appreciate it, but then again, for once, a woman seemed to prefer Sam over his brother at first meeting. He was kinda amazed.

"What ever for?" She asked, glancing at both of them in turn. Sam opened his mouth to answer, to spin some kind of lie, but he never got a chance.

"Just standard procedure, ma'am." Came a voice from behind them. A very familiar sounding voice. Whirling around, Sam came face to face with Cas, dressed up in a nice-looking suit. Of course, the look was a bit messed up by the trench coat he had on over it, and the fact that his tie wasn't on correctly. Glancing at Cara, he didn't think she noticed, thankfully.

Though it was weird. Cas normally made sure his disguised himself well.

"And who are you?" Cara asked, at the same time Dean asked, "Cas? What the hell?"

Cas just gave Dean a small smile before looking at Cara. "I'm… Lucas Meadow. But please, call me Cas. The home office sent me. To help, you know?"

"Err…" Sam shared a look with Dean. Or, he tried to anyway. Dean wasn't looking at him, or at Cas. In fact, he seemed to be trying very hard to not look at either. "Right. Ok. Good to have you."

"HQ could have warned us." Dean muttered, before turning back to Cara. Sam looked between everyone quickly before talking before Dean could talk.

"So, new change of plans." He said, making sure to look his brother in the eye to let him know how serious he was about this. "You go and get Agent Meadow caught up on the case and go follow up on the next lead. I'll stay here, with Dr. Roberts ok?"

"What?" Dean glared at him. "But-"

"That's probably for the best." Cas said. "I had something I wanted to check out anyway."

Cas turned and left without anything more. Sam sighed before giving a look to Dean. Dean glared at him before sighing, following after Cas. Sam just shook his head, watching them go.

"So…. Three agents for one job?" Cara asked, sounding amused. Sam forced himself to give her a small smile.

"You know, sometimes this happens. HQ just has no faith in its agents." He said, before motioning into the office. "So, the blood samples."

xXx

"Ok Cas." Dean snapped, rushing to get in front of his friend. He was going to be the one to lead, damn it. "We are taking my car, not yours, first off."

"I won't argue that, Dean." Cas said. He gave a weird pause at seeing the Impala, but after glancing at Dean, he got in without saying anything.

"So what did you want to…." Dean made a motion from the driver side. "'Check out'?"

"The strip club that they all were killed at."

"What? No way." Dean glared at Cas. He wanted to make his point, it weighed with how much he didn't want to look him in the eye. The anger won out, for a moment. Cas just looked at him curiously. "We already checked there, remember? Ad if you meant just watching for the siren, well that won't do us much good. We won't know who she is until it's too late!"

"It wouldn't hurt to try." Cas started to say, slowly, as if he was thinking something through. He wasn't thinking too hard though, as he wasn't making the squinting face he normally makes. As if reading his mind, Cas's eyes narrowed as he looked at him. "Or if not, I would like to look over your notes."

"Ok fine. Those are at the hotel room." Dean said, putting the car into drive and getting onto the main road. The car fell into silence. He hated it, but the thought of turning on music and showing Cas how uncomfortable he was worse. He wished Bobby had given them warning that Cas was coming.

A thought occurred to him. He glanced at Cas for as long as he dared to take his eyes off the road.

"How did you get here so fast anyway?" Dean asked. Cas glanced at him. "I heard you, in the background with the call from your dad. And Sioux Falls is like, four hours away man!"

"I wasn't there." Cas said, immediately. "It was a… three-way call. I guess you could say, with my dad. I wanted to come and help as soon as I heard about the case."

"Huh." Dean said. That was all he could think to say as he pulled into the parking lot of the motel. A three-way call? He knew those things existed, he had just never used them. He didn't think Bobby used them. And now he wished even more that Bobby had just mentioned that Cas was coming, at least.

"Oh, I did find something though." Cas suddenly said as Dean was about to get out. "I went to go look through the evidence before I came to find you."

"And what did you find?" Dean asked, only a little sarcastic. Cas just pulled a baggy out of his trench coat. He wore it whenever he could, which made Dean happy, even if he wasn't going to admit it. Dean had given the thing to him, about a year before Sam went to Stanford. It's amazing how nice it still looked.

"These flowers." Cas said. "At every scene."

"Like it was left on purpose?" Dean asked, leaning back in the seat to look at the baggy. The flowers looked familiar, he just couldn't place them. "You're smart, do you know what they mean?"

"They're hyacinths. From the Mediterranean. Specifically, from the island where the siren myth started in the first place."

Dean met Cas's eyes and suddenly knew where he had seen the flowers before.

xXx

Cas flipped his phone shut as Dean slid back into the car. He was sad that he missed the call to Bobby, but he hoped that Bobby had something that could help.

"What did Bobby say?" He asked. Cas just shook his head.

"He didn't pick up. I left a message." He said, glancing out the front window as Cara got out of a taxi and walked inside. "So she's the one that's got Sam?"

"Yep." Dean said, popping his 'p'. He gripped the wheel, needing something to hold in frustration. Cas glanced at him, before looking back out the window. He pulled out a flask from his trench coat and took a sip before holding it out to Dean. Dean was tempted, sure, but in the end shook his head. Him and Cas didn't like the same kind of alcohol, and he didn't want to be tipsy around Cas anyway. He could have sworn Cas looked annoyed, just a little, but it passed quickly. He took another sip, before putting the flask away.

"You're upset with him." He said, plainly. It made Dean want to hit him.

"Yeah, of course I'm upset with him." He snapped. "He got himself hypnotized by a siren!"

"Well, yes." Cas said, shifting to give Dean his full attention. Dean glanced at him before glancing away. He couldn't deal with Cas's full attention right then. "But more than that, you're upset with him. Just like you're upset with me."

"You know why I'm upset with you." Dean said, a hard edge coming into his voice. "And I'm not talking about this now."

"I think we need to." Cas said, leaning closer. "Look, me and your brother-"

"No Cas." Dean said, harshly. He hadn't meant for it to be that harsh, but he couldn't take it back. He sighed, trying to release some anger. It didn't help. "Look. Man. I'm done, ok? I am just done, with all the secrets, and the lies, from both you and Sam. And now you come here, in the middle of a job, trying to act like it hadn't happened?"

"I'm sorry that we've kept secrets from you Dean, I really am." Cas said. He was looking at Dean with wide eyes, and Dean could tell he was sorry. Dean kinda wished he wasn't, just to stay mad longer. "That doesn't mean that we aren't here for you. That I'm not here for you."

"It sure doesn't feel that way sometimes." Dean said. It sounded weak, even to his own ears. Cas leaned forward again, before pausing. Dean didn't say anything, didn't move, didn't even breath in fear of breaking what was apparently reality.

Cas closed the distance and lightly kissed his lips, before shifting to move away. Dean deepened the kiss before he had a chance.

xXx

Ok, so the Cas-centric chapter was supposed to go before this, but then I decided that this was a better order. So this is the episode Sex and Violence, in which the boys hunt a siren, duh. I tried to not use the episode word for word, but sometimes it just sounds better than rewording it sorry! I hate using that much of an episode directly, but I needed to build up to the Dean-Cas moment!

This was one of the chapters I was most excited to write! It is also one of the chapters I was most excited to hear all of you guys from, so please, tell me what you think! Both on AO3 and on FFN! I got a couple of more twists for you coming up, both in this episode and in general, and look at this! The main pairing has a kiss?! Amazing, truly.

Season 4 is coming to a close soon, so soon it will just be plot point after plot point! And hen I hope this story starts picking up, pace wise, because up til now, I've been looking at the boys' cases from a lens of, 'if Bobby had a son that didn't leave the house a lot, what would change?'. And the answer is, not much. Normal cases are just the brothers, so… But soon, the apocalypse is nigh, and this will be happening where the fact that Castiel isn't there will change things. We're getting there.

So comment and Review please! It makes me happy and more likely to write!