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Sam and Ruby try to kill Lilith; Zachariah and Castiel tell Dean he must play his part in stopping Lucifer.

Supernatural

Lucifer Rising

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

When the Levee Breaks

Sam and Dean search for Castiel (guest star Misha Collins), but instead find his human vessel, Jimmy.

The Rapture

A 19-year-old named Adam contacts Dean and Sam, claiming to be John Winchester's son.

Jump the Shark

Dean and Sam discover a comic book series that accurately details their lives; Chuck reveals that Lilith has a plan for Sam.

The Monster at the End of This Book

The lives of Sam and Dean if they were not hunters.

It's a Terrible Life

Castiel and Uriel ask Dean to use the torturing skills he learned in hell to extract information from Alastair; Dean's world is shattered when Alastair reveals shocking information.

On the Head of a Pin

Sam and Dean investigate a town where people are cheating death and discover that the Reapers have gone missing.

Death Takes a Holiday

Sam and Dean go to a small town in Iowa where three men have beaten their wives to death; a Siren puts Sam and Dean under a spell.

Sex & Violence

Dean and Sam go under cover to investigate a series of murders at their old high school, and remember their experiences there as students.

After School Special

A mysterious death brings Dean and Sam to a town full of magicians; Sam and Dean must reverse a spell.

Criss Angel Is a Douche Bag

Dean and Sam investigate the appearance of a ghost in an abandoned house, but things get more complicated when a family moves in.

Family Remains

Ruby, Sam and Dean search for Anna, a woman who can hear angel's conversations; Sam tells Dean what happened while he was in hell and how Ruby saved his life.

S4 E9 | I Know What You Did Last Summer

E22 | Lucifer Rising

E21 | When the Levee Breaks

E20 | The Rapture

E19 | Jump the Shark

E18 | The Monster at the End of This Book

E17 | It's a Terrible Life

E16 | On the Head of a Pin

E15 | Death Takes a Holiday

E14 | Sex & Violence

E13 | After School Special

E12 | Criss Angel Is a Douche Bag

E11 | Family Remains