Sam and Dean face their biggest challenge yet. Rowena makes her move. ...

Concerned for Castiel, Dean and Sam devise a plan to rescue Lucifer from Amara's clutches. ...

Amara unleashes a dark fog on a small town, which causes everyone to go mad. Sam and Dean realize this is a stronger version of the original black vein virus Amara previo ...

Sam and Dean are visiting a small town in Colorado where people are mysteriously disappearing every 27 years. While they are investigating, the boys encounter a pair of h ...

Lucifer tries to assert himself into heaven; Crowley tells Sam and Dean they must take down Lucifer. ...

Sam and Dean battle a pair of werewolves who have captured two victims. Just as the brothers are about to win, one of the werewolves shoots Sam. Dean gets his brother and ...

A dangerous creature is accidentally released into an old house, attacking a mother and her child, leaving them both in a coma. Sam and Dean learn that Bobby and Rufus on ...

Sam and Dean attend a wrestling match to relive one of their fondest memories, but when a wrestler turns up dead, they suspect foul play. ...

Dean convinces Castiel, who is still Lucifer, to send him back in time to the last reported sighting of the Hand of God which could be useful as a weapon against Amara. L ...

Sam and Dean investigate a set of murders on Valentine's Day and discover they are dealing with an ancient curse. Once kissed by the curse, the person is marked to die. ...

Claire believes recent murders in town are supernatural and asks Sam and Dean to investigate. However, Sheriff Mills tells the guys that Claire has been getting into trou ...

Sam and Dean investigate a case where people are suffering violent deaths after hearing a mysterious sound. ...

Now that he has Sam in the cage with him, Lucifer offers Sam a way out but it comes with a steep price. Dean and Castiel look into the angel smiting that might have kille ...

Amara (guest star Emily Swallow) unleashes her power on the local townspeople as she issues a shocking challenge. Dean (Jensen Ackles) tries to better understand the hold ...

Sam is shocked when his imaginary childhood friend, Sully, makes an unexpected appearance. Sam tries to understand why he is seeing Sully now. Even more surprising, Dean ...

Sheriff Donna calls Sam and Dean for help after a horrific murder with supernatural elements happens in her town. Sam continues to have visions and asks God for help, whi ...

Castiel seeks out Metatron's help to stop the Darkness. However, Metatron is pretty happy with his new life as a freelance videographer for the local news and isn't incli ...

Sam and Dean investigate a series of murders at a local BandB that also happens to be Lizzie Andrew Borden's old home. When a man tells them he saw a little girl around t ...

Sam and Dean's road trip to fight monsters and demons is chronicled entirely from the Impala's perspective. ...

Sam and Dean try to help Castiel recover from Rowena's spell, while searching for Amara who has now grown into a young girl. Rowena tries to use her powers to protect her ...

Jenna winds up in a dangerous situation and calls Dean for help, leaving Sam to deal with monsters on his own. ...

Dean and Sam dealing with the aftermath of freeing the darkness on earth. ...

Dean comes to a stunning decision that will alter his life -- as well as Sam's; Rowena and Crowley face off, putting Castiel in the middle. ...

After Charlie's death Dean and Sam are both heartbroken. Despite their feelings for the situation Dean has decided to battle against the Stynes. On the other hand Sam, Ca ...

Dean and Sam investigate a bizarre murder and realize the killer bears the same tattoo as those from the Styne family. Eldon Styne attacks Dean and a brutal fight ensues. ...

When Claire Novak gets a lead on her mother, Amelia, who has been missing for years, Castiel asks Sam and Dean to help her. Castiel feels guilty for what he did to the No ...

Sam looks for a magical box built by former Men of Letters, Magnus, hoping it will cure Dean, but is surprised by a deadly alarm system. ...

Charlie contacts Sam and Dean after she finds the Book of the Damned - which could help eliminate the mark of Cain; Castiel and Metatron look for Castiel's grace. ...

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. ...

Despite Dean's directive to forget about looking for a cure for the MOC, Sam continues to do research. Dean suspects Sam is hiding something but decides to focus on a mur ...

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