An angry resident of The Glades who calls himself “The Savior” embarks on a kidnapping and killing spree to punish those he believes have wronged the residents of his neighborhood. To make things worse, he broadcasts these murders online and claims he was inspired by Arrow’s vigilantism. Oliver is horrified by this statement and vows to stop “The Savior,” but his manhunt in intensified after Thea comes to him in tears and tells him Roy has been kidnapped. Laurel is surprised when her father starts to believe her mother’s claim that Sara is still alive. Meanwhile, Malcom tells Moira to find the person responsible for his attempted murder.

Tragedy strikes when a rescue attempt at a tenement building proves unsuccessful, leaving the men and women of firehouse 51 affected by the loss of the victim. Severide's decision to put Mills on the fast track to move from Truck to Squad doesn't sit well with some of the others and tension mounts between Severide and Casey over Heather Darden. Shay and Dawson are forced to deal with a junkie's crazy behavior while on a call and Shay considers a different way to have a family. Meanwhile, the team draws the ire of local drug dealers who threaten the peace and safety of the neighborhood and firehouse.

From "All-Star Celebrity Apprentice", real estate mogul Donald Trump; comic Gary Gulman; musical guests Wavves.

A popular sports reporter accuses a cameraman of rape and stalking; when the victim learns she is pregnant as a result of the rape, the defense employs controversial tactics in hope of gaining favor with the jury.

Claire and Cam bring in a third party (Wendi McLendon-Covey) when they reach an impasse on a landscaping decision; Phil teaches basic fix-it skills to the kids; Mitch helps Lily with a bully.

Katie Couric guest stars as herself when Rayna appears on the "Katie" show, trying to set the record straight about her marriage and balancing her career with motherhood. Juliette attempts to take her album launch into her own hands but it backfires when she tweets out a surprise concert location. Maddie lies to Teddy about her whereabouts — with dangerous consequences — and Deacon is drawn to his dog’s pretty new veterinarian, Stacey. Meanwhile Avery tries to control his musical destiny by flouting Dominic and Marilyn, and things are awkward between Scarlett and Gunnar, as he continues to process his brother’s death.

Sam and Dean investigate some recent vampire kills and are surprised to learn Krissy Chambers is involved. They find Krissy and learn her father was killed and she’s been taken in by a man named Victor, who has taken in a group of orphan kids to teach them how to hunt. Victor is helping the teenagers find the vampires who took their parents so they can get revenge. Sam is intrigued by Victor’s method of giving the teenagers a home life as well as a hunting life, but Dean is suspicious of Victor’s motives.

Papa Bear reassess gay marriage, scientists study Facebook "Likes," Tennessee lawmakers mistrust a mop sink, and Carl Edgar Blake II shows off his pigs.

Comic Don Rickles; from "Red Widow", actress Radha Mitchell.

Frankie's sister (Molly Shannon) offers to help at the house while Frankie studies for her finals for dental-assistant school; Axl tries not to act jealous when Cassidy's ex-boyfriend visits.