Sam never had any real reason to be scared of his brother. There were the occasional fights that got out of hand and the moment's screw ups he had made, but over all Sam knew that Dean would never intentionally hurt him. Even now, with the whole Gadrel mess looming over them. That's what made the indecent with the first blade so frightening. For the first time in his life Sam was honest to god scared for himself. He has always had Dean watching over him, making sure nothing gets him. No ghost, monster, or demon could hurt him, big brother Dean was there. Even when he rose the fricking devil Dean pulled him put of the way by his shirt. But now Dean was the one on the other end of the blade, the one he was scared of. Nothing had ever hurt more. Deep down he knew it was the mark, the consequence of it. Having heard the real story of the two original brothers from both Dean and Cas he couldn't help but wonder if this was what was going to happen. If this was going to end with more than Abaddon's head severed. Dean looming over him had become a reoccurring nightmare. At night dreams of Dean holding the first blade over him and swinging down. He would always wake up screaming, most of the time it was Deans name. Even with Sam's current anger at his brother Dean still came running to the rescue, assuming the call for him was a plea for help and not for mercy. That was the worst, the fact that Sam was thinking all these god awful thoughts about his brother who then came rushing to the rescue. Sam liked to think that him and Cas were better friends now. That after there little "chick flick moment" about screwing up, they had grown closer. So he told Cas about his dreams and fears. Cas never doubted Dean and so told Sam that it was nothing to worry about, and that the Mark of Cain would not do that to Dean. But Sam could see that he was full of crap. Just like in the week when Dean was gone, how Cas lied about the grace all being gone. As mean as it was Sam hoped Cas fucking regretted not believing him. Exspeshaly when he was right. Look at what Dean had done to him. When Dean had so hastily agreed to the unread terms and conditions he never thought that it would be Sam giving the pound of flesh, not himself. In the end he never saw Abaddon killed. Because he died first. Dean could not handle the power thrust into his hands and lobed of Sam's head before he even got inside the building. So Sam was back in the cage. What else had he expected, heaven ? Hell? To be stuck in the veil with Kevin and Candy? He was immediately greeted with the smell of sulfur and the cold burn of hell fire. And a really long as speech about how much older brothers sucked. Then he was free. In a massive burst of wight light Lucifer was erupted from his cage and Sam was alone. Well with Michael and Adam, but after so long of being thrown around by Lucifer's extensive knowledge on wielding the cage they were not much company. Not long after he was risen to, by none other than Castiel. With Lucifer back on his tale and a nasty taste in his mouth whenever he thought about his brother Sam took of. Not really knowing, or caring where he was going he left.