Something was a bit off. Like his body just didn't feel right. Dean didn't feel ill but just a bit funny. Like waking up with a hangover, when your body is desperately trying to get rid of the toxic alcohol. He didn't think anything of it. Probably just exhaustion.

They had just finished a job that had taken longer than expected, because nothing can be that simple when it came to the Winchester brothers. Both boys were beat from it, it had required a lot of energy and physical fighting. That spirit just couldn't leave them alone. Fortunately neither of them had acquired any serious injuries so that is something positive that came out of it. However unluckily for them there was no rest as they were needed on another job. Something about old ladies going missing? Bobby had been babbling on about it over the phone.

"Uh…I'm tired" Dean yawned as he sat on the bed watching Sam pack.

"Common Dean we gotta get out of here"

"Ok…ok. I'm ready lets go" Dean wanted to take the extra few minutes whilst Sam packed to figure out what was going on with his body. It just feels a bit heavy.

Once they had made it to the Impala Dean shot passed Sam almost knocking his brother over leaving a gush of wind behind him. He hurried into the passenger seat. This earned a confused expression from Sam. Since when was Dean so keen on letting me drive? Sam continued to give his brother a weird look as he settled down in the drivers seat.

"What?...I'm tired. You can drive. Wake me up when you want to switch" And with that Dean laid back in the chair rested his head on the window and closed his eyes with a sigh. It was a mixture of exhaustion and the fact that he wasn't sure if he was coming down with something.

Sam should of seen this as a sign that there was something wrong with Dean. If he wasn't so preoccupied with his own exhaustion and figuring out the next job then he would of paid more attention to the hints that his brother was leaving him.

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They stopped of at a gas station to fill up the car and get some breakfast. Dean was still asleep when Sam came back with steaming cups of coffee and food. He tapped on the window of the passenger side causing Dean to jump and hit his head on the window. Great now he is going to get a headache on top of whatever was going on.

"Hey! Was that really necessary?" Dean glared at his brother rubbing his head.

"I literally tapped the…Never mind here's the coffee" Sam didn't have the energy to quarrel, really there was no point.

Dean clearly detected the exhaustion when his brother couldn't be bothered to argue, "Maybe I should drive, you look shattered"

"Nah it's fine. I'll tell you when to take over"

They carried on driving in silence and for once peace took over the cars atmosphere.

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After an hour Dean who had been unable to sleep broke the silence. The funny feeling in his stomach was intensifying and he was starting to worry. Maybe it was from the coffee. He did not really feel like eating and had left his food for later. Yep definitely from the coffee. It was just sitting so heavily in his gut. He began fidgeting trying to get comfortable and shake this weird sensation.

"Hey I hate to say this but I think there was something wrong with the coffee"

"What? Why do you say that?"

"I dunno man my stomach feels a bit weird"

"Er..no. I think its just you. I feel fine"

"Huh" No, no. I'm sure it was just the coffee its because he has a faster metabolism. Sam will feel it soon. Dean was attempting to convince himself.

This was another sign literally screaming in Sam's face that he failed to notice.