Remember The Code

Dexter Morgan is a skilled, class A killer. He is tidy and neat with his work, and leaves no traces at all. But after a while, people started to notice the disappearance of others. Two of these people, Sam and Dean Winchester, started searching for the thing that has been killing those people. Dexter knows about their plan. He knows about everything. So he befriends them, thinking it might fool them, but not everything Dexter tries works. {Supernatural X Dexter Crossover}