Season 10
EPISODE 01 - (BLACK)
DEAN IS LIVING IT UP AS A DEMON WHILE SAM HITS ROCK BOTTOM IN THE SEARCH FOR HIS BROTHER — Dean (Jensen Ackles) is a demon and running amuck with Crowley (Mark Sheppard) while Sam (Jared Padalecki) tries to figure out what happened to his brother. Meanwhile, Castiel (Misha Collins) is dealing with his diminishing grace.
EPISODE 02 - (REICHENBACH)
CROWLEY TELLS DEAN THE MARK NEEDS TO BE FED — Crowley (Mark Sheppard) notices Dean (Jensen Ackles) 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 fed. Meanwhile, Sam (Jared Padalecki) is captured by Cole (guest star Travis Aaron Wade), an angry man who blames Dean for his father's death years ago and wants revenge. Cole tortures Sam, hoping he'll tell him where Dean is hiding. Hannah (guest star Erica Carroll) sees how weak Castiel (Misha Collins) is becoming as his grace continues to fade, so she makes a bold choice and asks Metatron (guest star Curtis Armstrong) for help.
EPISODE 03 - (SOUL SURVIVOR)
JENSEN ACKLES RETURNS TO THE HELM AS DIRECTOR — Sam (Jared Padalecki) continues his efforts to save Dean (Jensen Ackles) from the Mark of Cain. Crowley (Mark Sheppard) realizes Dean's demonic antics are starting to cause problems for him in Hell so he searches out an unlikely ally – Castiel (Misha Collins).
EPISODE 04 - (PAPER MOON)
WEREWOLF KATE RETURNS — A recent string of werewolf attacks points to a surprising culprit – Kate (guest star Brit Sheridan), the werewolf Sam (Jared Padalecki) and Dean (Jensen Ackles) let live.
EPISODE 05 - (FAN FICTION)
SUPERNATURAL CELEBRATES ITS 200TH EPISODE — When Sam (Jared Padalecki) and Dean (Jensen Ackles) investigate the disappearance of a teacher, they are stunned to see the school is putting on a musical based on their lives. Familiar faces abound in this milestone episode.
EPISODE 06 - (ASK JEEVES)
DEAN GETS A SURPRISING MESSAGE FROM BOBBY'S CELL PHONE — Dean (Jensen Ackles) 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 money, Dean talks Sam (Jared Padalecki) into hitting the road to claim their fortune. However, what they encounter at the house is far from a treasure chest.
EPISODE 07 - (GIRLS, GIRLS, GIRLS)
ROWENA REAPPEARS — Sam (Jared Padaleck) and Dean (Jensen Ackles) stumble upon a demon who is running from Crowley (Mark A. Sheppard). Before they have a chance to shut him down, Rowena (guest star Ruth Connell) steps in and takes things into her own hands. Realizing Rowena is trying to recruit and train followers in the art of witchcraft, Sam and Dean come up with a plan to catch her before she can do much damage. Meanwhile, Hannah (guest star Erica Carroll) runs into a blast from her vessel's past, which complicates things for her and Castiel (Misha Collins).
EPISODE 08 - (HIBBING 911)
JODY MILLS RETURNS — Jody Mills (guest star Kim Rhodes) reluctantly attends a mandatory sheriff's retreat and is partnered with an overeager sheriff named Donna (guest star Briana Buckmaster) who wants to bond. Just as Jody thinks things can't get any worse, a body with just strings of meat and skin hanging off the bones is discovered. While the local sheriffs blame an animal attack, Jody knows better and calls Sam (Jared Padalecki) and Dean (Jensen Ackles).
EPISODE 09 - (THE THINGS WE LEFT BEHIND)
CASTIEL REUNITES WITH JIMMY'S DAUGHTER CLAIRE — Castiel (Misha Collins) finds Jimmy's daughter Claire (guest star Kathyrn Love Newton) in a group home and she convinces him to break her out. After she runs away from him, Castiel calls Sam (Jared Padalecki) and Dean (Jensen Ackles) to help find her before she gets in trouble. Meanwhile, Crowley (Mark A. Sheppard) faces his biggest challenge yet.
EPISODE 10 - (THE HUNTER GAMES)
THE AFTERMATH — 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 comes up with an idea that Sam deems the "single worst idea I've ever heard." Meanwhile, Rowena (guest star Ruth Connell) continues to plot against Crowley, and Castiel tries to mend his relationship with Claire (guest star Kathryn Love Newton) who is plotting revenge against Dean for killing her friend.
EPISODE 11 - (THERE'S NO PLACE LIKE HOME)
CHARLIE RETURNS FROM OZ — Sam is scanning the internet for suspicious paranormal activity and comes across a video of Charlie (guest star Felicia Day) beating up a district attorney. Dean suspects she's back from Oz and hunting on her own, assuming the district attorney must have been a demon. When they do find Charlie, they are shocked when she tells them why she really came back from Oz.
EPISODE 12 - (ABOUT A BOY)
DEAN IS TURNED INTO HIS 14 YEAR OLD SELF- Looking to get Dean (Jensen Ackles) out of the bunker, Sam (Jared Padalecki) 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 fairies or angels, but the truth turns out to be much more shocking- Hansel (guest star Mark Acheson), from Hansel and Gretel lore, is kidnapping people and turning them into their younger selves to placate the evil witch (guest star Lesley Nicol). Unfortunately, Dean finds this out the hard way after he becomes Hansel's next victim and reverts to his 14 year old self.
EPISODE 13 - (HALT & CATCH FIRE)
GHOSTLY CONNECTION — 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 can't figure out is how he's doing it. With three dead, the brothers must stop the ghost before he claims his next victim.
EPISODE 14 - (THE EXECUTIONER'S SONG)
THE RETURN OF CAIN — Dean (Jensen Ackles), Sam (Jared Padalecki) and Castiel (Misha Collins) deal with Cain's (guest star Timothy Omundson) return. Crowley (Mark Sheppard) and Rowena (guest star Ruth Connell) continue to grow closer but when Crowley bails on plans with his mother to help the Winchesters, Rowena lets him have it.
EPISODE 15 - (THE THINGS THEY CARRIED)
COLE PAYS A VISIT TO THE WINCHESTERS — Despite Dean's (Jensen Ackles) directive to forget about looking for a cure for the Mark of Cain, Sam (Jared Padalecki) continues to do research. Dean suspects Sam is hiding something but decides to focus on a new murder case where they run into Cole (guest star Travis Aaron Wade). The three team up and learn a Khan worm is infecting men and turning them into murderers. Unfortunately, the worm makes it's way into Cole.
EPISODE 16 - (PAINT IT BLACK)
ROWENA MAKES PLANS TO RECLAIM HER MAGIC — Sam (Jared Padalecki) and Dean (Jensen Ackles) 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 the victims were members of a Catholic church and had recently given confession, leading the brothers to suspect the priest (guest star Stephen Daniel Curtis) is somehow involved. Meanwhile, when Crowley (Mark Sheppard) captures Olivette (guest star Teryl Rothery), the leader of the Grand Coven, Rowena (guest star Ruth Connell) pleads her case to be allowed to practice magic freely again.
EPISODE 17 - (INSIDE MAN)
DEAN AND ROWENA FACE OFF AGAINST EACH OTHER — Sam (Jared Padalecki) and Castiel (Misha Collins) follow up on a lead about the Mark of Cain. Dean (Jensen Ackles) and Rowena (guest star Ruth Connell) meet.
EPISODE 18 - (BOOK OF THE DAMNED)
FELICIA DAY RETURNS AS CHARLIE — Charlie (guest star Felicia Day) calls Sam (Jared Padalecki) and Dean (Jensen Ackles) to tell them she found the Book of the Damned which could help remove the Mark of Cain. The Winchesters race to her after she tells them she's been shot by a man named Jacob Styne (guest star Jeff Branson) who says the book belongs to his family and he won't rest until he gets it back. Castiel (Misha Collins) and Metatron (guest star Curtis Armstrong) take a road trip to find Castiel's grace but they hit a couple road bumps along the way.
EPISODE 19 - (THE WERTHER PROJECT)
CAN DEAN SAVE SAM? — Sam (Jared Padalecki) 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 (Jensen Ackles) of the Mark of Cain. However, what he's not prepared for is the deadly alarm system Magnus set up on the box. When Sam opens the box, he puts both his and Dean's life in danger.
EPISODE 20 - (ANGEL HEART)
CLAIRE NOVAK RETURNS — When Claire Novak (guest star Kathryn Love Newton) gets a lead on her mother, Amelia (guest star Leisha Hailey), who has been missing for years, Castiel (Misha Collins) asks Sam (Jared Padalecki) and Dean (Jensen Ackles) to help her. Castiel feels guilty for what he did to the Novak family and wants to make amends by reuniting Claire with her mom. However, when they find out what took Amelia, they realize there is a chance Claire may not get her happy ending.
EPISODE 21 - (DARK DYNASTY)
THE WINCHESTERS MEET THE STYNES — Dean (Jensen Ackles) and Sam (Jared Padalecki) investigate a bizarre murder and realize the killer bears the same tattoo as those from the Styne family. Eldon Styne (guest star David Hoflin) attacks Dean and a brutal fight ensues. Meanwhile, Castiel (Misha Collins) acts as referee when Charlie (guest star Felicia Day) and Rowena (guest star Ruth Connell) are forced to work together on the Book of the Damned. Crowley (Mark Sheppard) discovers his mother is missing and knows she's up to something so he turns to an old enemy for help.
EPISODE 22 - (THE PRISONER)
DEAN IS ON A RAMPAGE — When it comes to the Stynes, Dean (Jensen Ackles) decides to take matters into his own hands. Sam (Jared Padalecki) tries to come to terms with his decision.
EPISODE 23 - (BROTHER'S KEEPER)
SUPERNATURAL SEASON FINALE — Dean (Jensen Ackles) makes a shocking decision regarding the Mark of Cain that would change not only his life, but Sam's (Jared Padalecki) too. Meanwhile, Crowley (Mark Sheppard) and Rowena (guest star Ruth Connell) face off and Castiel (Misha Collins) gets caught in the middle.