Dean, Sam and Castiel try to find Lucifer and send him back to hell.

Dean awakens in a pine box, freed from hell, and has a joyful reunion with Sam and Bobby; Sam, Dean and Bobby wonder what pulled Dean from hell, and what it will want in return.

Bobby and Dean trap Sam in a panic room so he can detox from demon blood; Dean and Sam have a major confrontation.

Sam, Dean and Bobby deal with the aftermath of the devil (Mark Pellegrino) rising from hell; Chuck has stunning news for the brothers.

The spirits of Meg and Agent Henriksen appear and accuse Sam and Dean of failing them; the brothers must save Bobby, who is too crippled with guilt to fight off the ghosts of young children he couldn't save.

Thirty hours before Dean's deal with the crossroads demon is up, Sam, Dean and Bobby search for Lilith; in a battle to the death, Sam, Dean and Bobby take on Lilith and all her demons in an attempt to save Dean's life.

Sam and Dean investigate a rash of violent deaths in an Ohio town that is a haven for gamblers and drinkers; Ruby helps Bobby rebuild the Colt from scratch.

Sam and Dean learn that someone has stolen a cursed rabbit's foot from John's secret storage room in New York and call on Bobby (Jim Beaver) for assistance.

Bobby and Dean are at a loss when the wall comes down in Sam's mind; the fight for heaven comes to a head.

Dean and Sam head to Bobby's hometown when the dead begin rising from the grave to reunite with their families.

On a mission to save their father, John (recurring guest star Jeffrey Dean Morgan), from Meg (recurring guest star Nicki Aycox), Sam and Dean seek help from an old family friend, Bobby (Jim Beaver).

Sam is abducted by the yellow-eyed demon and finds himself in a ghost town with children who have special abilities. They learn that the demon has brought them together to initiate his endgame.

As time runs out for Dean, Sam convinces him to investigate a possible zombie case; when Bobby discovers where Bela is hiding, Dean leaves Sam behind to confront her.

Sam and Dean investigate the mystery of several men who apparently died of fright; after Dean becomes infected, Sam and Bobby must find the root of the disease.

The Winchester brothers seek the help of their family friend Bobby while investigating a series of unexplainable happenings on a local college campus.

When one half of a serial killing duo, a former militia member, commits suicide when caught by authorities, Hotch and his team must race to identify and apprehend his partner and save his victim.

Sam and Dean realize that they have an enormous task in hunting down hundreds of demons that escaped from the Devil's Gate; Bobby tells the brothers about a sighting in Nebraska that turns out to be manifestations of the seven deadly sins.

In hopes of defeating Lucifer, Castiel decides to search for God; Bobby's friend, Rufus, begs for help when demons begin attacking his town.

Crowley offers to reveal Death's location in exchange for Bobby's soul; Pestilence releases a deadly virus on Sam and Dean.

Bobby asks Dean and Sam for help after Crowley refuses to return Bobby's soul; a deep secret about Crowley is revealed.