Sam and Dean investigate a girl's death that may be linked to a ghost. Their probe leads them to encounter Harry and Ed, two famous supernaturalists, who are also on the case. ..More

Sam and Dean get help from a former member of the Men of Letters to locate the First Blade, after Crowley falls off the wagon and starts injecting himself with human blood. ..More

Sheriff Mills tries to save a girl from a family of vampires who are using her as bait to lure in humans they can feed on. ..More

Tessa the reaper returns and leads a conspiracy against Castiel's angel followers. Meanwhile, Dean is eager to use the First Blade when the angels are attacked, but Sam worries about the cost to his brother whenever he uses it. ..More

Dean is feeling the effects of the First Blade. Meanwhile, Metatron makes his move against humanity, as Sam, Dean and Castiel try to stop him. ..More

Dean becomes more aggressive as a demon, and Crowley tells him it's because the Mark of Cain needs to be fed. Meanwhile, Sam is captured by an angry man who blames Dean for his father's death and wants revenge. ..More

Sam tries to release Dean from the Mark of Cain. Meanwhile, Crowley seeks the help of an unlikely ally after encountering problems due to Dean's behavior. ..More

A series of werewolf attacks points to Kate, the werewolf Sam and Dean let live. ..More

Rowena returns and tries to recruit and train followers in the art of witchcraft, but Sam & Dean devise a plan to stop her. Meanwhile, Hannah runs into a blast from her vessel's past, which complicates things for her and Castiel. ..More

Jody Mills reluctantly attends a mandatory Sheriff's retreat and is partnered with an overeager sheriff who wants to bond. A body with just strings of meat and skin hanging off the bones is discovered. Jody calls Sam and Dean for help. ..More