22 Episodes 2008 - 2009
Season 4 of the Supernatural finds Dean (Jensen Ackles) experiencing the latest in the chain of unbelievable events his life has become. Unable to defeat Lilith, Dean is sent to Hell to suffer for all eternity. As fate would have it, however, he is pulled out by a powerful source that ultimately introduces audiences to the character of Castiel, an angel of God sent to help the Winchesters prevent the looming apocalypse. However, in Dean's absence, Sam (Jared Padalecki) has turned to the demon Ruby (Genevieve Cortese) for comfort. Ruby has convinced Sam that he can become a more powerful hunter by ingesting demon blood, and Sam quickly becomes addicted. Meanwhile, Dean helps the fallen angel Anna (Julie McNiven) hide from the archangels bent on destroying her for her knowledge of their plans.
Thu, Sep 18, 2008 60 mins
In the fourth-season opener, Dean has been freed from hell and reunites with Sam and Bobby, but the three don't know how he returned. Bobby: Jim Beaver.
Are You There God? It's Me, Dean Winchester
Thu, Sep 25, 2008 60 mins
The spirits of Meg and Agent Henricksen appear and accuse Sam and Dean of failing them, as the brothers attempt to help a man haunted by the angry ghosts of children he was unable to save.
In the Beginning
Thu, Oct 2, 2008 60 mins
Dean is sent back in time and meets his parents when they first fall in love. He also encounters his grandfather, who may be hiding a secret that is key to Dean and Sam's mission.
Thu, Oct 9, 2008 60 mins
Sam and Dean encounter a man with a mysterious infection that transforms him into a flesh-eating monster. Sam thinks the man can be changed through reason to curb his newfound instincts, but Dean believes the most-humane thing to do is to kill him. Dameon Clarke guest stars.
Thu, Oct 16, 2008 60 mins
Several murders occur during an Oktoberfest celebration and it's learned a shape-shifting demon is responsible, and that it is taking the form of iconic movie monsters, such as a vampire, werewolf and mummy. The episode is presented in black and white.
Thu, Oct 23, 2008 60 mins
Several men die from fright after being infected with a mysterious illness that causes acute anxiety, which leads to total terror. Sam and Dean investigate, and Dean becomes infected. Sam desperately searches for a cure before Dean dies and is sent back to hell.
It's the Great Pumpkin, Sam Winchester
Thu, Oct 30, 2008 60 mins
A witch sacrifices people in a small town to summon a demon who may be a key to freeing Satan. To stop her, Castiel brings in a special angel who intends to destroy the town.
Thu, Nov 6, 2008 60 mins
A wishing well is discovered to be the real thing when a girl's teddy bear comes to life, someone wins the lottery and a local geek gets a beautiful girlfriend. But Sam and Dean realize disaster waits in the wings in this town where reality and fantasy are blurred.
I Know What You Did Last Summer
Thu, Nov 13, 2008 60 mins
Sam and Dean search for a young woman who can hear conversations between angels after Ruby tells them a powerful demon is on the prowl to find her.
Heaven and Hell
Thu, Nov 20, 2008 60 mins
Sam and Dean learn why the angels want to kill Anna. They try to save her by helping her restore a crucial part of her past, even as Alastair and his demons close in on her.
Thu, Jan 15, 2009 60 mins
Sam and Dean investigate the appearance of a female ghost in an abandoned house. But their efforts are complicated when a family moves in and the son is kidnapped through the walls.
Criss Angel Is a Douche Bag
Thu, Jan 22, 2009 60 mins
A formerly famous magician living in a small town makes a deal to acquire real magical powers and pays a heavy price for it when a murder occurs. Barry Bostwick, John Rubenstein, Richard Libertini.
After School Special
Thu, Jan 29, 2009 60 mins
Sam and Dean investigate a series of murders at their old high school. The probe leads the two to recall how Sam was the target of a bully at school, while Dean was the big man on campus.
Sex & Violence
Thu, Feb 5, 2009 60 mins
A seductive siren compels three men to murder their wives in a small Iowa town. Sam and Dean investigate and fall under her spell, leading them to engage in a battle against one another.
Death Takes a Holiday
Thu, Mar 12, 2009 60 mins
Sam and Dean visit a small town where people are cheating death because the Reapers have vanished. They journey into the spiritual world for answers and learn who is behind the Reapers' disappearance.
On the Head of a Pin
Thu, Mar 19, 2009 60 mins
Someone is using Lucifer's sword to kill angels. Castiel and Uriel ask Dean to use the torturing skills he learned in hell to obtain information from a likely suspect.
It's a Terrible Life
Thu, Mar 26, 2009 60 mins
Sam and Dean live normal, separate lives but they don't seem to know each other, even though they work at the same company. However, when colleagues start committing suicide, they team up to investigate the situation.
The Monster at the End of This Book
Thu, Apr 2, 2009 60 mins
Sam and Dean discover that their lives as demon hunters are accurately detailed in a series of "Supernatural" comic books. They track down the author, who explains that he sees visions of them and turns those images into comic books.
Jump the Shark
Thu, Apr 23, 2009 60 mins
Sam and Dean agree to meet with a 19-year-old man named Adam. Adam claims to be John Winchester's son, but they suspect that he's really a demon attempting to trap them.
Thu, Apr 30, 2009 60 mins
Castiel visits Dean in a dream and tells him he has important news. Dean and Sam set out on a search for Castiel, only to find his human vessel, Jimmy, who yearns for a normal life and to return to his family.
When the Levee Breaks
Thu, May 7, 2009 60 mins
Sam is locked inside Bobby's panic room to allow him to detox from demon blood, but Bobby wants to free him early to help fight in the anticipated apocalypse. Dean disagrees and seeks help from Castiel.
Thu, May 14, 2009 60 mins
The fourth season concludes with Sam and Dean preparing to fight Lucifer in the apocalypse. Elsewhere, Sam and Ruby attempt to kill Lilith.