Castiel comes back and he and Sam check out a lead on the Mark of Cain. They decide to go to Bobby for help. Meanwhile Dean and Rowena meet up. ...

Dean and Sam investigate grisly, identical suicides by various people with little in common; the brothers begin to suspect that a priest is involved. ...

Sam, Dean, and Castiel must deal with Cain's return. Rowena and Crowley grow closer. ...

Sam and Dean try to deal with the aftermath following the bloodbath. Castiel attempts to fix a struggling relationship with Claire, and Claire wants revenge on Dean for w ...

When Castiel finds Jimmy's daughter in a group home, she persuades him to break her out; Crowley is faced with a big challenge. ...

Sam and Dean discover a group of witches gone wild and they attempt to stop them. ...

Sam continues to try to save Dean from the Mark of Cain. Realizing that Dean's antics are causing problems for him in hell, Crowley seeks help from a reluctant Castiel. ...

Crowley is worried about Dean getting out of control, giving him a target to feed the mark. Sam struggles to escape from Cole. Hannah tries to convince Metatron to give C ...

Dean is a demon and running amuck with Crowley while Sam tries to figure out what happened to his brother. Meanwhile, Castiel is dealing with his diminishing grace. ...

The influence of the mark on Dean reaches new heights, as Metatron begins to reveal himself to humanity. ...

Abaddon makes a deal with Crowley to stop the Winchesters and recover the first blade. Castiel tries to bring Gadreel to his side in the war against Metatron. ...

Dean copes with the side effects of the Mark of Cain, as Sam investigates a series of violent murders related directly to Abaddon. ...

Dean is frustrated when he can't reach Crowley, who has promised to find The First Blade. When Crowley finally calls Sam and Dean, he tells them he fell off the wagon and ...

The unlikely duo, Crowley and Dean are forced to work together in order to find an item which could help them in the war against Abaddon. During their search they come ac ...

Dean sets off to cast Gadreel out of Sam, but Castiel tells him the only way to do that is to ask for Crowley's help. Will Crowley be able to save Sam? Will he double-cro ...

Dean and Castiel team up to find a Rit Zien, an angel healer, who is easing peoples' suffering by killing them. Sam and Kevin ask Crowley for help in finding a way to ope ...

Sam and Dean accidentally free Dorothy, who has been trapped in the bunker for years, who seeks their help in killing the wicked witch. ...

Sam and Dean reveal to Kevin that they have Crowley hostage, while Abaddon returns to hunt them all down. ...

After the reveal of Crowley's plan, Sam and Dean make the decision to use Crowley as the last trial, curing a demon. However, while they are working on the Hell trials, C ...

Sam and Dean try to figure out how to cure a demon. Crowley starts killing victims that Sam and Dean have saved from previous jobs. Castiel and Metatron begin the trials ...

Despite his increasing weakness, which he ends up claiming to be purifying him from demonic ancestry, Sam convinces Dean they must go on with the triple trial. Crowley ge ...

Prophet Kevin has deciphered enough of the tablet to set the next to enable closing the gates of hell: to rescue a soul from hell, and their choice falls on hunt mentor B ...

Sam and Dean hunt down the angel tablet with assistance from Castiel and Meg. ...

Castiel convinces the brothers he needs their help to sort of redeem his horrible bloodshed in heaven by saving Samandriel. Kevin has dodged his bossy mother but needs mo ...

Sam wonders about a link between abductions coinciding with weird natural phenomena, indeed demonic snatchings. Dean doubts his eyes about seeing Castiel, which re-trigge ...

So close but so far. Dean and Sam have the chance to get their hands on the tablet that contains the word of god. The only problem is, they have to win it in an auction. ...

Dean returns from purgatory a year after he disappears. He rejoins Sam, who has already moved on, and together they set out to find Kevin, the Prophet boy captured by Cro ...

Dick Roman summons Crowley and makes a deal with the demon, asking him to give blood from a common demon to the Winchester brothers instead of his own. Meanwhile Dean and ...

Dean and Sam learn that to kill Dick Roman, they need blood samples of an angel, an alpha, and a powerful demon. Castiel gives his blood to the brothers and Crowley infor ...

Dean is resting in Las Vegas and out of the blue, he receives the invitation for Sam's wedding. Further, the wife-to-be is Becky Rosen. Dean is sure that there is some so ...

In Montana, Bobby is interrogating the leviathan Chet and trying to find a means to destroy him. Chet suggests Bobby, Dean and Sam should watch the news on the television ...

Castiel doesn't kill Sam, Dean or Bobby, but warns them not to interfere in his business. Assuming his new role as God, Castiel sets out to right some of the wrongs in th ...