Sam and Dean investigate two mysterious deaths that suggest demons were responsible. The trail leads them to a devout religious family that harbor a dark secret.
A metahuman abducts Harry, believing that he's the Harrison Wells who gave him his powers... which are slowly killing him. Meanwhile, Barry tries to cope with the loss of his superspeed, and Caitlin meets her Earth Two counterpart.moreless
Ray, Sara and Kendra are shocked when they watch the Waverider fly off without them, leaving them stranded in the 1950s. After waiting months for their teammates to come back, the three realize they must move on with their lives. Ray and Kendra bond as a couple, but Sara decides to return to the League of Assassins and Ra's al Ghul.moreless
Cupid returns and begins killing celebrity newlyweds. To lure her into a trap, Oliver and Felicity go through with their marriage, even though they've recently broken up.
A twisted version of Supergirl, one who's the mirror image of the Kryptonian hero, sets out to destroy her National City counterpart. Meanwhile, Kara grows closer to Cat's son Adam.
While Castiel gets a lead on Metatron and interrogates him about the Darkness, Sam and Dean find Amara's location and try to sneak past Crowley's demons to get at the girl and kill her.moreless
Lisa tells the team that her brother Len has been kidnapped. However, when Barry makes contact with the villain, he insists that he doesn't want to be rescued.
The Winchesters investigate a series of deaths involving disembowelment. In each case, the victims attended the same church and confessed to the same priest. Meanwhile, Crowley captures Olivette and turns her over to Rowena in the hopes that she'll stop taking out her frustrations on his royal court.moreless
Sam and Dean try to stop a ghost who is taking revenge against a group of college students by killing people through various electronic devices.
Hartley Rathaway, a former S.T.A.R. Labs scientist who tried to warn Harrison about the generator, comes back looking for revenge. While he launches a wave of sonic-based attacks, Iris gets a new job, and Joe has Eddie secretly investigate Harrison.moreless
Clarke returns to Camp Jaha with troubling news. Meanwhile, Finn struggles with the aftermath of his actions.
John travels to Atlanta to stop a demon that an old friend has inadvertently risen... and learns that he may have to sacrifice a great deal to stop it.
Clarke confronts Dante Wallace (Raymond J. Barry). Meanwhile, Kane interrogates one of the 100; and Abby performs emergency surgery.
With his wife and son now dead, Neville joins with Bass to seek his revenge on the patriots. Rachel finds out about Priscilla, and Miles and Charlie pinch a steam train.
Miles gets injured fighting off a bunch of Sheriffs and then gets inadvertently trapped in a dilapidated building making his way back to camp. Tom kidnaps Charlie and discovers the truth about Jason.moreless
Clarke finally makes contact with the arch and Bellamy brings a grounder to the camp to try to get some answers.
Garth ends up in the hospital, and Sam and Dean go to find out what happened. However, when they arrive, Garth goes on the run and the Winchesters are surprised to discover what really happened.moreless
Jane tries to get all his remaining Red John suspects in one place so, with the final clue, he can reveal the killer's identity.
Dean is devastated by the fact that the doctor tells him Sam won't make it, so he promises any angel willing to help that he will owe them a favor. Many angry angels want to find Dean and kill him, but Ezekiel gets to him first. At the same time, Sam is fighting for his life, and Castiel has a hard time surviving without his powers.moreless
The Sandman, another member of the army of evil, tortures the people of Sleepy Hollow by infiltrating their dreams and turning them into nightmares. When the Sandman targets Abbie, she must seek out her institutionalized sister, Jenny, and face her past.moreless
Neville is captured by Miles. Rachel journeys to a mysterious tower which holds the only chance of restoring power.
Sam and Dean meet up with an old friend, Krissy Chambers, and discover that a Hunter has taken her and other orphans in and is teaching them how to be Hunters. Dean is suspicious of the Hunter's motives, while Sam is interested in how the man is giving the orphans a home life, something he never had.moreless
A witch's familiar asks the Winchesters for help when the witch, a cop who helped Sam and Dean on a case, has nightmares of murder that come true.
A rogue Division agent named Ray kidnaps his ex-wife, Kate, and a Division team sets out to rescue her. Nikita is confused when Michael sends Owen on the mission with her instead of going himself. Meanwhile, Sean makes a decision about Alex.moreless
Jane insists on pursuing his own leads to find Lorelei as the team investigates the murder of a reporter.
Jane continues his search for Lorelei while the team is investigating a confusing case of a kidnapped couple.
Crowley takes Kevin's mother hostage in an attempt to recover Kevin as he searches for the tablet. The Winchesters help Kevin rescue her, only to discover that she insists on joining them on their quest.moreless
Red John taunts Jane on the ninth anniversary of his wife and daughter's death. With Jane's attention diverted and his concentration wavering, the current investigation and his CBI career are put at risk.moreless
A ballerina is killed by a pair of cursed dancing shoes, and Dean starts to fall victim to the same curse. However, that's the least of the brothers' concerns when they discover that the store where the shoes were sold has been bought out by Leviathans.moreless
Jane and the CBI team investigate the murder of a high-end divorce attorney, with many enemies, after he is killed on his speed boat. Meanwhile, Agent Darcy questions Jane about Red John's involvement in Panzer's murder.moreless