DC COMICS' VILLAIN DEATHSTROKE APPEARS ON THE ISLAND WITH OLIVER — After Detective Lance arrests Oliver for murder, Oliver tells Moira the only lawyer he'll allow to represent him is Laurel. Laurel takes the case which puts her at odds with her father. Oliver offers to take a polygraph in front Detective Lance but things get tense when Lance asks him if anyone else was on the island with him. Oliver flashes back to when he got his first scar, courtesy of Deathstroke (guest star Jeffrey Robinson). Colin Donnell, David Ramsey and Willa Holland also star. Michael Shultz directed the episode written by Wendy Mericle & Ben Sokolowski.

SAM, DEAN, CASTIEL AND MEG TEAM UP AGAINST CROWLEY AND HIS DEMONS — Castiel reappears in Sam and Dean’s life and tells them Crowley (guest star Mark Sheppard) has unleashed several demons into a small town. The demons are looking for Lucifer’s Crypt, which holds a valuable asset, but Castiel lies to Sam and Dean about what it is. While interrogating a demon, the three discover Crowley has been torturing Meg (guest star Rachel Miner), who knows the exact location of the crypt. Sam and Meg fight to hold Crowley off while Dean and Castiel go in search of the crypt. Thomas J. Wright directed the episode written by Robbie Thompson.

THE HUNTER'S MARK — Stefan and Klaus form an uneasy alliance to try and contain the danger that Connor (guest star Todd Williams) has unleashed on the town. When Connor takes Jeremy, Matt and April (guest star Grace Phipps) hostage at the Grill, Stefan and Damon have a serious disagreement about the best course of action, and Elena is again caught between the two brothers. The situation quickly turns violent when Klaus sends one of his hybrids, Dean (guest star Blake Hood, “The Young and the Restless”) to stand up to Connor. Caroline is surprised to find Hayley (guest star Phoebe Tonkin) at the Lockwood mansion. Meanwhile, Professor Shane (guest star David Alpay) works with Bonnie to help her get past her fear and guilt. Chris Grismer directed the episode written by Michael Narducci.

A KISS IS JUST A KISS -- Vincent (Jay Ryan) is captured on a convenience store surveillance video while preventing a robbery, and Cat (Kristin Kreuk) warns him to be extra careful when his photo appears in the newspaper. Cat and Tess (Nina Lisandrello) investigate the disappearance of a woman named Amy (guest star Annie Murphy), who has gone missing after her fiancée, Dr. Michael Walters (guest star Jeremy Glazer), surprised his bride-to-be by placing their engagement announcement in the paper that morning. Evan (Max Brown) runs Amy’s fingerprints and discovers her true identity, while Cat wonders if her disappearance was intentional after Vincent mentions that he and JT (Austin Basis) have an escape plan to clear out of their loft without a trace in a matter of minutes. Later, Michael also goes missing and Joe (Brian White) learns that his team has been deceived. Meanwhile, Heather (Nicole Gale Anderson) is planning a surprise birthday party for her sister, forcing Cat to postpone her birthday plans with Vincent. At the party, Cat and Evan share a surprising moment. Steve Adelson directed the episode written by Blair Singer and Kelly Souders.

AMANDA PUTS HER FINAL PLAN INTO MOTION Amanda forces Nikita into a life-threatening situation where she has to choose between saving Michael or saving herself. The team races to find a way to stop Amanda, but with a diminished Division, they might finally be out-gunned. Eagle Egilsson directed the episode written by Albert Kim (#322).