Dean comes to a stunning decision that will alter his life -- as wel..
Dean takes matters into his own hands; Sam attempts to come to terms..
Sam and Dean discover a killer has the same tattoo as those from the..
Castiel asks Sam and Dean to help Claire be reunited with her mother.
Sam looks for a magical box, hoping it will cure Dean, but is surpri..
Charlie contacts Sam and Dean after she finds the book of the dead.
Sam and Castiel check out a lead about the Mark of Cain; Dean and Ro..
Sam and Dean investigate a string of suicides committed by people wi..
Sam ignores Dean's directive and continues to search for a cure; a K..
Sam, Dean and Castiel must deal with Cain's return; Rowena and Crowl..
The brothers race to stop a ghost who has been killing people throug..
Sam and Dean tackle a case where people vanish into thin air, leavin..
Sam comes across a video of Charlie attacking a district attorney.
In search of a cure for the Mark of Cain, Castiel comes up with an i..
When Castiel finds Jimmy's daughter in a group home, she persuades h..
When a gruesome corpse is discovered, Jody Mills calls Sam and Dean ..
Rowena intervenes when Sam and Dean encounter a demon who is running..
Dean and Sam discover that Bobby or his next of kin are beneficiarie..
Sam and Dean are stunned to learn that a school is presenting a musi..
A series of attacks lead to a surprising culprit -- Kate, the werewo..
Sam works to save Dean from the mark of Cain; Crowley seeks the help..
Crowley notices Dean's increasing level of aggression; a vengeful ma..
Dean is a demon and running amuck with Crowley while Sam tries to fi..