5 Series, 110 Episodes
Sam must fight with Death, and Dean sends out a call for help to the angels but gets a lethal response from the fallen legion. Meanwhile, Castiel learns what it means to be human.
Dean shocks Sam by opening the boot of the Impala and showing him that he has kidnapped Crowley. Kevin is horrified, but Sam and Dean convince him that they need Crowley to find the demons on Earth.
After Ezekiel tells Dean that a group of angels is hunting Castiel, Dean and Sam race to find their friend before the vengeful angels do. Meanwhile, a homeless Castiel has some surprising encounters.
Charlie lends Sam and Dean her expertise with an ancient computer, but they inadvertently release Dorothy of Oz from the Men of Letters bunker and must help her to defeat the Wicked Witch of the West
When Sam and Dean realise that a dog is witness to two gruesome murders, they look up a spell that allows Dean to communicate with the canine, but there are side effects no one could have predicted
Exiled from the bunker, Castiel gets a job and starts to enjoy life as a human. When he sees a newspaper story about disappearances in the area, he asks Dean to step in and help him investigate.
Dean gets a call from Sonny, an old friend who runs a home for delinquent boys on a farm where Dean was sent when he was younger. A mysterious death has now taken place and Sonny needs Dean's help.
Sheriff Jody Mills calls Sam and Dean for help investigating a series of disappearances in which each of the victims was a member of a local church chastity group, but soon Dean vanishes without trace
After the angels go to war with each other, Sam and Dean run into Castiel. But when their friend is captured and tortured, Dean wonders whether it might be time to tell Sam the truth about Ezekiel.
While trying to free Sam, Castiel suggests they separate Sam's brain from the angel's, but the only person who knows how to do that is Crowley
Looking to return as King of Hell, Crowley asks Dean for help finding 'The First Blade' - the only weapon that can kill Abbadon
After learning that Garth is in hospital, Sam and Dean pay a visit to check up on him. But Garth wastes no time in running away, and when Sam and Dean follow him they are stunned by what they find.
Sam and Dean go undercover at an upmarket spa in Minnesota when two people are murdered by having all of the fat sucked out of their bodies until they die. Is there a monster on the loose?
When Sam and Dean discover the bunker is haunted, their investigation leads them to a storage facility where demons have been keeping a prized possession. Castiel is captured and taken to Bartholomew.
While looking into the death of a teenage girl who they suspect may have been murdered by a ghost, Sam and Dean discover that another team of investigators - the Ghostfacers - are already on the case
Instead of helping Sam and Dean to search for the First Blade, Crowley sinks deeper into his addiction to human blood. Could the blade be in the possession of a former member of the Men of Letters?
While Dean struggles to come to terms with the effects of the Mark of Cain, Sam investigates a series of murders in a small community in Illinois that was once visited by Henry Winchester and Abaddon
Castiel investigates a mass slaughter of angels and finds a lone survivor, but when he rejects Metatron's offer to join forces, a surprising plan is set in motion. Sam and Dean apprehend Gadreel.
Sheriff Jody Mills calls Sam and Dean for help when she finds a young girl running from a group of vampires and has to kill one of the monsters, but the Winchesters discover all is not what it seems
Sam and Dean visit Chicago and discover the city's underbelly is divided between powerful clans of monsters. They also encounter a young man whose girlfriend has been killed by one of the creatures.
Abaddon uses the blood spell to travel back to Scotland in 1723, where she finds Crowley's son and brings him to the present day. Castiel tries to lure Gadreel to his side in the war against Metatron.
Sam and Dean go to Missouri to investigate when multiple deaths are caused by an explosion in an ice cream parlour. Sam worries about the high price Dean pays every time he uses the First Blade.
Dean feels the effects of the Mark of Cain, and Metatron makes his move, beginning to reveal himself to humanity. But Sam, Dean and Castiel face dire consequences when they take the fight to Metatron.