• Episode 1 - I Think I'm Gonna Like It Here

      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.

    • Episode 2 - Devil May Care

      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.

    • Episode 3 - I'm No Angel

      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.

    • Episode 4 - Slumber Party

      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

    • Episode 5 - Dog Dean Afternoon

      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

    • Episode 6 - Heaven Can't Wait

      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.

    • Episode 7 - Bad Boys

      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.

    • Episode 8 - Rock and a Hard Place

      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

    • Episode 9 - Holy Terror

      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.

    • Episode 10 - Road Trip

      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

    • Episode 11 - First Born

      Looking to return as King of Hell, Crowley asks Dean for help finding 'The First Blade' - the only weapon that can kill Abbadon

    • Episode 12 - Sharp Teeth

      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.

    • Episode 13 - The Purge

      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?

    • Episode 14 - Captives

      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.

    • Episode 15 - #Thinman

      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

    • Episode 16 - Blade Runners

      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?

    • Episode 17 - Mother's Little Helper

      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

    • Episode 18 - Meta Fiction

      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.

    • Episode 19 - Alex Annie Alexis Ann

      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

    • Episode 20 - Bloodlines

      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.

    • Episode 21 - King of the Damned

      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.

    • Episode 22 - Stairway to Heaven

      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.

    • Episode 23 - Do You Believe in Miracles?

      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.