After Elena is kidnapped by the Seven Deadly Sins, she is rescued by the Winchesters. When she finds out that Dean only has a year to live, Elena embarks on a mission to save Dean's life, but what happens along the way is anyone's guess.(Starts in S3 of TVD and S3 of SPN.) The Devil Within : When you leave the one you love behind, who suffers the consequences?

Supernatural and Teen Wolf crossover, Where Dean and Sam have a younger sister that has to stay with Bobby, who lives in Beacon Hills, because Sam and Dean don't want her hunting with the apocalypse so close. So her new school is now Beacon Hills High School.