One week later-

Dean scrubbed at the whiskers covering his jaw. He'd not found the time to shave despite the nurses' insistence as he didn't want to miss Sammy waking up. It seemed almost pointless now as he sat outside Sam's room waiting for the crash team to rescue his brother. He could feel his consistently sanguine attitude dying out.

Sam's heart was failing. After over a week of being in a coma, his body began to gave in to, the seemingly inevitable, death. His brother's battle was coming to an end.

Dean bit his lip to stop it quivering as he battled back the sobs. Steady breaths through the nose fought to keep the tears from trailing down his cheeks. His chest was aching and tight. Swallowing, his gaze bore into the speckled floor, unwilling to make eye contact with anyone else in the corridor, especially Bobby and Jody. They watched him with concerned eyes.

The door squeaked as it opened, Dean stood up as soon as he heard it. A weary looking woman stepped out from the room and instantly knew she'd have to speak to Dean from the way his verdant eyes were pleading with her. Her heart sank.

"I'm so sorry." She murmured, "He's gone." Pity filled her features.

Dean couldn't breathe in the maelstrom of emotion, "You're wrong." He began to push past her to get into the room. Bobby grabbed his shoulders and pulled him back.

"Sam?! Sam?!" He cried, tears cascading down his face, "Sammy, please! No, Sammy."

The hunter fell to the ground as his legs gave way from beneath him. His body shook as sobs rocked him. He couldn't see, tears blinded him. Despite being on the cold floor, Dean kept pulling himself forwards slightly.

He felt hands on him as Bobby tried to pull him up and move him away from the door.

"No," He stood and pushed on to the door, "I need to see him." Determination set his brow.

He pushed the door open forcefully due to the adrenaline and marched towards his still baby brother, ignoring everyone else in the room. His hands went to Sam's hair, soothing him gently. He hushed him as though he was comforting the empty body.

"Here, Sammy. I'm here." He whispered, "I never should have left you. I'm sorry."

He tried to rock him gently, like a mother to their child. Green eyes scanned the pale face, committing it further into his memory; every line and new wrinkle. He closed his eyes after a while and rested his head against his brother's forehead.

It was a long time before Bobby managed to part them so the medical staff could take Sam away. Dean sobbed when the body was pulled from his fingers. He held on for as long as he could manage.

"Bobby." He gasped, falling into the old man desperately. His heart being pulled apart. "I can't bring him back." He gasped, "It's all my fault."

The old hunter spoke, probably reassuring him and comforting him, Soothing his pain but Dean didn't hear a single word the man uttered. There was no Sam and there was only nothing.

The impala was quiet aside from the deep grumble from the engine. Dean's eyes stared ahead at the dark Tarmac emptily. He couldn't bring himself to play music or hum to himself. He'd promised Bobby when he left his house last week that he'd call regularly but he didn't know what to say; no words would make this better. They were meaningless.

He thought about Sam.

Dean knew his brother was gone for good. Sam died from medical causes and not anything supernatural so he couldn't exactly strike up a deal. That doesn't mean he won't try and hunt down the cause before it kills other people. He wasn't going to allow that. This unknown disease had dragged Sammy to the grave and the anger inside of Dean demanded revenge.

Dean drove on silently and he knew this would be the rest of his life.

This is the end! Thank you to everyone who has favourited or commented! I hope you enjoyed it and please check out my other stories!