Something is different.

He hunts with Samuel and the others. There is a clear pecking order. Sam has never been good at taking orders. His temper never frays.

On the inside Sam is screaming. Something is different, something is wrong.

He can walk right through a Devil's Trap. He can drink Holy Water, eat salty foods. No weapon does more or less harm than it should. He whispers exorcisms like others hum a catchy tune.

It doesn't prove a thing.

He is not whole, there are pieces, broken and shattered. He can't figure out where they came from.

He sees Dean and one of those broken pieces resonates inside. He never really sees the Impala just the shape of her tucked in and put to bed.

He remembers though, seeing the Impala, seeing everything she stood for. He remembers being Lucifer and then being Sam.

On the inside Sam is screaming. Something is different. He is not whole.

He wonders.

Because He can remember a lot of things but He can't quite remember who He is.