When John has to go to Afghanistan for a month, he returns to find Sherlock doesn't even seem to have noticed his absence. Or has he? Johnlock.

Dean and Cas are two world renowned serial killers, and begin a game of cat and mouse, leaving each other messages in their victims, winking/waving at each other on security cameras. Eventually, it's going to come to a head when they both pick the same victim; Sam Winchester. Inspired by a post from therangerofthenorth on tumblr.