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Dean is a demon and running amuck with Crowley while Sam tries to figure out what happened to his brother. Meanwhile, Castiel is dealing with his diminishing grace.
Crowley notices Dean is becoming more and more aggressive. Dean tells him that’s the side effect of being a demon, but Crowley knows it’s something more - the Mark of Cain needs to be .. show full overview
Sam continues his efforts to save Dean from the Mark of Cain. Crowley realizes Dean’s demonic antics are starting to cause problems for him in Hell so he searches out an unlikely ally.
A recent string of werewolf attacks points to a surprising culprit – Kate, the werewolf Sam and Dean let live.
When Sam and Dean investigate the disappearance of a teacher, they are stunned to see the school is putting on a musical based on their lives.
Dean is surprised when he checks Bobby’s cell phone and hears a message that says Bobby or his next of kin have been named as a beneficiary in an heiress’ will. Hoping that means extra .. show full overview
Sam and Dean stumble upon a demon who is running from Crowley. Before they have a chance to shut him down, Rowena steps in and takes things into her own hands. Realizing Rowena is trying .. show full overview
Jody Mills reluctantly attends a mandatory sheriff’s retreat and is partnered with an overeager sheriff named Donna who wants to bond. Just as Jody thinks things can’t get any worse, a .. show full overview
Castiel finds Jimmy’s daughter Claire in a group home and she convinces him to break her out. After she runs away from him, Castiel calls Sam and Dean to help find her before she gets in trouble. Meanwhile, Crowley faces his biggest challenge yet.
After the massacre at the ranch, Dean, Sam and Castiel double their efforts to find a cure for the Mark of Cain but there is nothing in the lore that can help them. Desperate, Castiel .. show full overview
Sam is scanning the internet for suspicious paranormal activity and comes across a video of Charlie beating up a district attorney. Dean suspects she’s back from Oz and hunting on her .. show full overview
Looking to get Dean out of the bunker, Sam finds a case for him and Dean to investigate – people are disappearing into thin air with only their clothes left behind. Sam and Dean suspect .. show full overview
A ghost starts killing people through various electronic devices. Sam and Dean discover who was killed and why this ghost is seeking revenge on a group of college students but what they .. show full overview
Dean, Sam and Castiel deal with Cain’s return. Crowley and Rowena continue to grow closer but when Crowley bails on plans with his mother to help the Winchesters, Rowena lets him have it.
Despite Dean's directive to forget about looking for a cure for the Mark of Cain, Sam continues to do research. Dean suspects Sam is hiding something but decides to focus on a new murder .. show full overview
Sam and Dean investigate a string of suicides committed by people with little in common other than the identical, grisly method of death – slow, self-administered disembowlment. All of .. show full overview
Sam and Castiel follow up on a lead about the Mark of Cain. Dean and Rowena meet.
Charlie calls Sam and Dean to tell them she found the Book of the Dead which could help remove the Mark of Cain. The Winchesters race to her after she tells them she’s been shot by a man .. show full overview
Sam learns that former Men of Letters, Magnus, once built a magical box and Sam sets out to find it in the hopes it can cure Dean of the Mark of Cain. However, what he’s not prepared .. show full overview
When Claire Novak gets a lead on her mother, Amelia, who has been missing for years, Castiel asks Sam and Dean to help her. Castiel feels guilty for what he did to the Novak family and .. show full overview
Dean and Sam investigate a bizarre murder and realize the killer bears the same tattoo as those from the Styne family. Eldon Styne attacks Dean and a brutal fight ensues. Meanwhile, .. show full overview
When it comes to the Stynes, Dean decides to take matters into his own hands. Sam tries to come to terms with his decision.
Dean makes a shocking decision regarding the Mark of Cain that would change not only his life, but Sam’s too. Meanwhile, Crowley and Rowena face off and Castiel gets caught in the middle.
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