Set in season 9 "Road Trip". It's been 2 weeks since Dean has separated from Sam and Castiel, suddenly one night Cas appears in the Impala (again...), bearing bad news about his little brother. Sam seems to have shot himself and is dead...or is he? And what will Dean and Cas make of it when they see that Lucifer is possessing his body? Can he still be alive?

Set in "Free to Be You and Me" season 5, after Sam decides to give up hunting, and finds out he is Lucifer's vessel. Instead of calling Dean he decides to take matters into his own hands. If there's no Sam, then Lucifer can't possess him, right? Sam tries to kill himself to avoid being possessed by Lucifer, but how are Dean and Cas going to feel about that?

Set in OotP, Tonks, Mad-Eye, Lupin, and the rest of the crew come to retrieve Harry to Grimmauld Place, but they find him dead, or is he dead? What will happen to Harry if they don't know that he's just under a spell? Or better yet, how will they react...

Dean is attacked and killed by the hellhounds when his year is up. How does Sam cope with having to bury his brother? This is basically Sam witnessing Dean's death and having to bury is brother.