Afterwards, some of Bartholomew's followers approach Castiel to join him in his way of doing things. Numerous angry angels race to find and kill Dean, but one, Ezekiel guest star Tahmoh Penikett , gets to him first. The Families' paths cross with Sam and Dean when they meet Ennis , a man with a personal vendetta against the monsters when his girlfriend is murdered by a mysterious figure with silver claws who kills David's brother, Sal. At the bunker, Kevin is only able to translate the angel tablet into an of. Kevin tries to leave the bunker to find Linda himself, but Dean convinces him not to go by telling him that he's family and that even if his mother is alive, she is as good as dead. While investigating, Castiel is captured and tortured.
Before they can get more out of him, however, he is assassinated by a spy in Castiel's ranks. Dean discovers that the group counselor, Suzy Lee Susie Abromeit , is one of his favorite ; unhappy with her old life, she has quit the porn industry and is trying to turn over a new leaf. In the season finale, Sam and Castiel worry about the Mark's influence on Dean, but eventually realize that he's their best shot at defeating Metatron. He then leaves before Abaddon can attack him. She puts Sam and Dean under her control to find the girls and kill them. Due to the extensive damage wrought on Sam's body, he finds that he is unable to heal Sam with a touch as angels normally can.
At the same time, Abaddon travels back in time to 1723 and kidnaps Crowley's son Gavin to use as leverage against him. When Sam learns about Dean's past he is stunned and asks for more information, which Dean is reluctant to give. It was also announced that he would direct an episode in season 9. Gadreel kills Kevin and leaves, taking with him the angel and demon tablets, but leaves Dean alive to mourn the loss of Kevin and Sam. Season 9, Episode 21 May 6, 2014 Season 9, Episode 21 May 6, 2014 Abaddon demands that Crowley help her kill Sam and Dean. Meanwhile, Sam wrestles with his inner demons and Castiel learns what it means to be human.
But there's no time to rest as he, Dean and Kevin deal with a captured Crowley. Metatron, having grown bored with his solitary rule of Heaven, proposes working together to restore Heaven with angels that they like. Dean kills her in retribution and has Ezekiel resurrect Castiel, lying to the others by saying that he had tricked April into resurrecting Castiel before he killed her. Timmy tells his mother to move on and she listens to her son, returning to her normal self as she departs. He confronts Crowley, who claims that Kevin's mother isn't dead.
Meanwhile, Dean struggles with effects from the Mark of Cain and is tested by Crowley. The brothers need to find the blade before Abaddon does, so they enlist the help of a former member of the Men of Letters guest star Kavan Smith. In the present, Dean meets up with Robin again, though she initially pretends not to recognize him out of hurt that he had abandoned her without a word back then. Charlie figures out that held clues from Man of Letters to Dorothy—his daughter—on how to defeat the Witch. Cain also reveals that the spell led them to him because the brand Lucifer marked him with when he turned him into a demon is the source of the Blade's power, and he can transfer it to someone worthy. The other angels look to Castiel as their leader once more, however he would rather be a regular angel.
Sam collapses and Dean sends out an emergency plea through prayer to any, and every, angel in the area to help Sam. Dean tries to make up with Sam who agrees to return to hunting with Dean, but doesn't fully trust him anymore. Garth insists that he and his pack don't harm humans and peacefully coexist. After Charlie stabs the Witch to death using the pointed of the —thus freeing Sam and Dean from the Witch's control—Dorothy uses the key to return to Oz and free it from the evil forces. Abaddon, having tracked them down, arrives. The other reigning family in town is made up of werewolves, lead by Julian Duval guest star Sean Faris.
Wooing her with his genuine admiration for her and her work, he seduces her at the same time that Sam and Sheriff Mills realize that the people taken are members of the chastity group who have broken their vows of chastity. Dean finds another bomber, who turns out to be the reaper Tessa. After Violet is kidnapped, Sam, Dean, David and Ennis team up to save her, learning that the thing that killed David's brother and Ennis' girlfriend is actually a man driven insane with revenge by the death of his son at what he believes to be the Families' hands and wants to drive them to war against each other. He dreams that he's talking with his brother , who is trying to convince him to fight to live, and their late friend , who is trying to convince him to let go and die. Sam and Dean capture Gadreel, and while Dean is alone with him, Gadreel goads him about what Sam really thinks of him. Dean arrives and kills the three werewolves running the plot. Metatron claims that Castiel will fail, but he will let him back into Heaven and give him a power supply for his new grace which will otherwise soon kill him.
Dean discovers there is a conspiracy amongst Castiel's angel followers and at the heart of it is Tessa, the Reaper. Despite promising him they will, they go back to ignoring each other when he's gone. Gadreel grows tired of Metatron's lies and defects, teaming up with Castiel to try and stop him. Sam and Dean are able to trick the prisoner into revealing that Metatron has a secret portal into Heaven for his followers and is amassing an elite ground force for an unknown reason. He calls Dean, who leaves Sam and Kevin at the bunker doing research, to investigate with Castiel. While the two interview the girl's mother, Betty guest star Maria Marlow , they are surprised when she starts talking about cold spots and fritzing. Death explains that he has come to pay Sam the honor of reaping him personally, and Sam agrees to go with him so long as his death is permanent this time in attempt to prevent the suffering and death his and Dean's resurrections have caused in the past.
Hurt by Dean's trickery, Sam tells him that Gadreel is not their problem, but refuses to elaborate, instead bidding Dean to go. Sam and Dean break through it and discover the one and only Dorothy guest star Tiio Horn from Oz. Charlie takes her up on her invitation to go with her, as she has been longing for fantastical adventures of that kind ever since she became a hunter. Meanwhile, Castiel struggles to survive without his powers. The three of them, with and as their prisoner , work to find a means to put the angels back in and are also forced to deal with , , who is attempting to seize control of Hell in Crowley's absence and enforce her reign of Hell on earth.
Castiel Misha Collins struggles to survive without powers. Crowley then takes the Blade as he doesn't trust Sam and Dean not to kill him and will only give it back to them once they have tracked down Abaddon. Kevin has learned that his mother's alive and asks them to rescue her. She reveals that Abaddon had been present at her convent and removing people's souls before encountering and of the Men of Letters. Castiel kills her to prevent her going through with her threat of disclosing his location to other angels, who seek revenge on him for locking them out of Heaven. Meanwhile, Sam fights for his life and must face some familiar demons to do so.