Malcolm engineers Slade's escape to train Oliver and Thea in how to survive. Meanwhile, five years ago Amanda brings Oliver and Maseo to Starling City to recover the Omega bio weapon, and Oliver must decide whether to stop China White or stay with his friends and family who are falling apart without him.moreless
Abraham and his team of vampire hunters track the Master to the lair and confront the grand vampire in a climactic showdown. Meanwhile, Gus receives a job offer.
While Dutch returns to help Eph get on the air and broadcast a warning about the vampires, Eldritch waits for the Master to bring him his payment. in the past, Abraham goes questing for the Master only to discover that he's stumbled into a trap.moreless
Eph goes to find Kelly and finds signs of a struggle. Meanwhile, Dutch convinces Vasily to help her stop Eldritch's plan and restore the Internet, only for Fitzwilliam to capture them.
Eph and Abraham use Jim as bait in a plan to track down the Master. Meanwhile, Neeva encounters a mysterious stranger, and in the past, Eichhorst orders a young Abraham to complete a most unusual carpentry program.moreless
Eph joins Abraham on his quest to destroy the passengers and anyone that they've infected. Meanwhile, Nora goes to see her mother and Gabriel's manager Ruby finds herself having to clean up one of his victims.moreless
As his friends conduct an autopsy on Redfern's transformed body, Jim makes a startling confession. Meanwhile, Gus gets a new job and Ansel takes desperate measures to protect his family.
The four survivors in quarantine start showing unusual symptoms. However, Everett overrides Eph's attempts to quarantine them. Meanwhile, an old friend visits Abraham.
A plane filled with dead passengers spurs an investigation in the opener of this series, in which a vampiric virus spreads through New York City.
The killer: Doug Slater, the victim: Samantha Turner
Samantha is a prosecutor who is also Sergeant Mark Cross' girlfriend. She is the lead prosecutor in the upcoming trial against the League of Nations gang which Mark infiltrated in a two-year undercover assignment. Doug Slater was also involved in taking down the gang and, in addition, was the first responder in a shooting ten years ago. The officers on the scene were Angie Flynn and Mark Cross and the truth of what really happened there has haunted Angie and Mark to the present day.
Sarah comes home to search for answers and with Cosima's help she digs into the origins of the clone experiment. The hunt takes her into perilous territory that could cost her more than she realizes.moreless
The victim: Barb Birk; the killer: Sasha King
Barb was the owner of her own diner, in whose kitchen her charred remains were found. Sasha in an ex-employee of Barb and currently lives and works at a women's shelter. The fire was started in the early morning on a day that the diner was closed. Suspicion initially falls on the victim's son, Jason Birk, whose lighter was used to start the fire.
The killer: Ian; the victim: Kevin Carpenter.
Detectives Flynn and Vega investigate the death of Carpenter, who returned to the city after spending three years traveling through the Far East. A cryptic note, “I never had the courage until now,” is found in the hotel room where the victim died. Meanwhile, Angie is upset that Sgt. Kevin Cross, someone with whom she has history with, is the new team leader after the recent promotion of Boyd Bloom to Superintendent.
After a battle with Cyrus Gold, Oliver is poisoned and left for dead, and Felicity gives him an antidote that causes hallucinations of his past. Meanwhile, Brother Blood captures Roy, Barry continues assisting Felicity, and Lance loses someone when he tries to run surveillance on Cyrus.moreless
Officer Lance asks the Arrow for help in stopping a serial killer who goes after women, and Felicity volunteers to help. However, when their trap fails, the killer captures Laurel. Meanwhile, DA Adam Donner seeks the death penalty for Moira, and Oliver recruits Roy to help him find the Canary.moreless
Twist after twist keeps you guessing as you try to determine the true alliance of Kellog. Meanwhile Alec is forced to make a tough decision between a loved one and Kiera while the mysterious Freelancers agenda starts to become clear.moreless
Travis gets possession of the 2nd tech suit. Emily confesses to Alec as everyone goes after the sphere. Alec finds his "dead" father.