Barry and the team go after the Mist, who possesses toxic gas powers, and they reflect on the night Caitlin’s fiancé died. Meanwhile, Henry gets a long-awaited visit from Joe,…

Barry discovers his powers and puts them to the test, only when he finds its no longer a test but the real thing when he encounters a certain someone.

Ragnar’s warriors march on to King Ecbert’s villa and are met with a surprisingly vicious welcome party.

Ragnar and King Horik return to Kattegat; Ragnar places his trust in those who have stood by him.

King Horik returns to Kattegat with a surprising proposition for Ragnar; Lagertha runs into a less than enthusiastic homecoming from her new husband; Athelstan becomes confidant to King Ecbert.

Ragnar and King Horik clash over how to dispense justice to Jarl Borg; King Aelle in Wessex; Ecbert has an eye on a new alliance.

Princess Aslaug’s latest prophecy comes to fruition as she readies to give birth once more; Ragnar and Horik have very different ideas about the true purpose of their trip to…

Ragnar and Ecbert come face to face; Jarl Borg rules Kattegat with an iron fist; Rollo must now become the leader his people need in Ragnar’s absence.

Lagertha and Ragnar unite to try to win Kattegat back from Jarl Borg; Aslaug must face the truth of her prophecies; Athelstan struggles to define his faith; Bjorn must once…

The time has come for an unlikely alliance to band together for a new raid on England; a storm pushes the Viking fleet to a new destination; Ragnar and his…

King Ecbert finds himself facing an entirely new kind of foe; Ragnar races to dominate in the west; Jarl Borg has his own plans in store for the future of…

The battle begins between Ragnar and King Horik’s forces against Jarl Borg; Princess Aslaug makes her way to Kattegat.

Dean makes a shocking decision regarding the Mark of Cain that would change not only his life, but Sam’s too. Meanwhile, Crowley and Rowena face off and Castiel gets caught…

When it comes to the Stynes, Dean decides to take matters into his own hands. Sam tries to come to terms with his decision.

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….

As Gotham City’s gang war reaches its boiling point, Fish Mooney goes head-to-head with Maroni and Penguin in an attempt to re-stake her claim on the city. Meanwhile, Barbara and…

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…

The Ogre breaks down Barbara’s emotions, while Gordon and Bullock go to great lengths to track him down. Meanwhile, Penguin leads a massacre, beginning an epic war, while Bruce learns…

Sam 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 of the Mark…

Gordon and Bullock continue their investigation of the Ogre, who begins to make his move on someone close to Gordon. Meanwhile, Bruce and Selina team up to expose a corrupt…

Charlie calls Sam and Dean to tell them she found the Book of the Dead which could help remove the Mark of Cain. The Winchesters race to her after she…

Gordon and Bullock inspect a cold case involving “the Ogre”, a serial killer who targets young women in Gotham City. Meanwhile, Fish plots her escape from the Dollmaker, and Bruce…

Sam and Castiel follow up on a lead about the Mark of Cain. Dean and Rowena meet.

Sam and Dean 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…

Despite Dean’s directive to forget about looking for a cure for the Mark of Cain, Sam continues to do research. Dean suspects Sam is hiding something but decides to focus…

Jaha makes a surprising move. Clarke gets help from an unexpected source. Lincoln seeks revenge.

Jake’s mainly absentee father, Roger, comes to town to spend some time with his son. Jake can’t wait to see him, but Charles is skeptical of Roger’s intentions. Meanwhile, Holt…

Wick and Raven are faced with a setback. Maya and Jasper witness a terrible act.

Gordon seeks information about the controversy involving Loeb; Fish’s allegiance with the prisoners is questioned; and Bruce copes with the aftermath of an attack close to home.

It’s the day of Gina and Charles’ parents’ wedding, and the whole squad is given a job to fulfill for the ceremony. However, Jake and Amy get sidetracked chasing a…

Lexa and Clarke get into a heated discussion during battle preparations; Bellamy races against time.

Following several bank robberies, Gordon and Bullock investigate the Red Hood gang. Selina Kyle continues to bond with Barbara, and Fish Mooney tries to reclaim her position in the underworld.

Clarke begins to question Lexa’s leadership decisions and Indra continues to push Octavia. Meanwhile, at Mount Weather, Jasper steps up into the role of leader, and Cage throws Maya into…

Dean, Sam and Castiel deal with Cain’s return. Crowley and Rowena continue to grow closer but when Crowley bails on plans with his mother to help the Winchesters, Rowena lets…

Gordon takes Dr. Leslie Thompkins to the circus, but the day turns quickly when the circus comes under attack. Then, Falcone enlists Butch Gilzean to help Penguin with the nightclub,…

When Jake notices that Holt has been acting moody, he teams up with Holt’s husband to figure out what happened. Meanwhile, at the precinct, Charles tries to get a confession…

Clarke is faced with a difficult choice and Raven helps Bellamy navigate Mount Weather as Dr. Tsing begins to harvest the 47, while Jaha and Murphy encounter a stranger on…

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…

Gordon and Bullock set out to stop Gerald Crane, a biology teacher who has been harvesting the glands of his murder victims. Meanwhile, after finding herself in an unusual setting,…

Jake is heartbroken over Sophia but his spirits are lifted when the squad is invited to a Homeland Security terrorist training simulation. That is, until the agent in charge assigns…