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Castiel awakens from his comatose state. Meanwhile, a teen is turned into a reluctant prophet after being struck by lightning, and Sam and Dean believe he is the key to defeating the Leviathans.
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Dick obtains a hard drive with info about the Winchesters and hires a talented hacker to break the firewall within a tight deadline, while Sam and Dean try to get to the hacker before she succeeds.
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Sam and Dean reconnect with an old hunter friend who suddenly disappears in an abandoned house that is haunted by a powerful ghost
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Dean and Sam help Garth battle a Shojo, a Japanese creature sent to seek revenge on enemies. Making their task more difficult is the fact that a Shojo can only been seen when the viewer is drunk.
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Lucifer drives Sam mad and he ends up in a mental hospital.
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Sam and Dean investigate after a ballerina dances herself to death, and their probe reveals that the ballet slippers the victim wore are cursed. When Dean accidentally touches them, the curse takes hold of him.
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A demon that once murdered women in a small town resurfaces and embarks on another killing spree. Sam and Dean visit a man once possessed by the demon to see if he can remember any of the demonic beast's plans.
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Children draw their worst fears at a birthday party and they come to life to kill their parents
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Sam and Dean investigate when bodies branded with a mysterious symbol turn up with their feet and hands severed; Dean meets a girl at a bar.
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The God of Time (Jason Dohring) sends Dean back to 1944, where he is arrested by legendary lawman Eliot Ness (Nicholas Lea)
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Sam helps a teen girl search for her missing father, who is also a supernatural hunter. Meanwhile, Dean tries to take down Dick Roman (James Patrick Stuart).
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As Sam (Jared Padalecki) and Dean (Jensen Ackles) race the clock on a high-stakes mission, Bobby (Jim Beaver) seeks the help of an unlikely old friend to solve one of the most personal cases of his life.
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Sam and Dean hunt a mysterious creature that is attacking people in a New Jersey state park. Local townsfolk believe the creature is the legendary Jersey Devil. While in town, Dean discovers that a restaurant's special s...
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A Winchester wedding is planned. Meanwhile, Sam gets involved in a confrontation with someone from his past, and Dean reluctantly teams up with another hunter (DJ Qualls) when he finds himself in a situation that he cann...
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Sam and Dean investigate when an angry spirit murders mediums in the so-called most psychic town in America. But the two have trouble locating the medium who is controlling the homicidal ghost.
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Sam and Dean are cloned by two Leviathans who go on a killing spree as the two brothers, which lands the real Sam and Dean on the FBI's most wanted list. Meanwhile, Bobby tries to find a way to kill the Leviathans.
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A jealous witch (Charisma Carpenter) unleashes her wrath on a small town when she discovers her husband (James Marsters) is having an affair.
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Sam and Dean investigate a string of gruesome murders and discover the Egyptian god Osiris is behind the deaths.
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Sam hunts a demon from his childhood who is killing thugs and eating their brains.
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Sam experiences hallucinations caused by the broken wall in his head. Meanwhile, Castiel struggles with his newfound power; and Bobby worries about Dean as he tries to fight Castiel and take care of Sam.
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Castiel doesn't kill Sam, Dean and Bobby but warns them not to interfere in his business. Assuming his new role as God, Castiel sets out to right some of the wrongs in the world.