In order to solidify his power, a war hardened Jeremy has tasked Elena, Clay and Nick with recruiting all North American Mutts into the Pack. Meanwhile, Elena is accosted by mysterious new characters who challenge her with a surprising claim.

Danny must determine who murdered a man when multiple women who worked for him all take credit for it. Also, Frank disagrees with his priest about how to handle a local boy who has been stealing money from the church, and Nicky is arrested with a group of friends when the police find drugs in her car.

Maya and Farkle are caught cheating on a test and have to face the school honor board, which includes Riley and Lucas as members. Meanwhile, Auggie tries to figure out what he wants to be when he grows up.

A barbaric Wesen ritual is brought to the present and Nick, Hank and Wu are already five steps behind the serial killer. To aid in the investigation, Monroe goes undercover. Meanwhile, Hadrian's Wall's war against Black Claw intensifies as Eve uses her unique skills to interrogate a suspect.

A melange of M-themed subjects are mixed and matched with Jo Brand, James Acaster, Bill Bailey and Alan Davies.

Mary’s life is in danger when a dead pool predicts her death for the same day as an important Lookinglass product launch. When Pritchard is needed the most, he fails to show up and winds up in the hospital after a near fatal brawl. After Pritchard's hospitalization, Otto begins to find glitches in Pritchard’s code that might not only drastically change Pritchard, but Mary as well.

In the quest to save Abbie, Crane and Sophie are forced to battle a supernatural force targeting the citizens of Sleepy Hollow, while Pandora and The Hidden One only grow stronger. Meanwhile, in an effort to find out what truly happened to her sister, Jenny faces an old foe: her father. Can our heroes solve their most personal case yet?

When his experience in the Phoenix stone leads him to do the unthinkable, Damon finds himself without a care in the world, spiraling out of control and under the influence of a dangerous and reckless Julian. Refusing to give up on his brother, Stefan attempts to reason with Damon only to uncover the devastating reason for his descent. Elsewhere, Caroline begins having some dangerous side effects as a result of her supernatural pregnancy and is forced to turn to Valerie for help. Meanwhile, Bonnie, Nora and Mary Louise attempt to track down a ruthless vampire hunter named Rayna after they suspect that she has reemerged.