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.
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 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.
Chaos breaks out in Vancouver when a series of cyber attacks turn the city upside down. Kiera and Carlos race to find the perpetrator while clues suggest Alec's own technology has something to do with it.moreless
After a surprise attack by the Freelancers, Kiera is captured by Julian’s followers. Alec reactivates Travis' military chip in order to hunt him, but the hunter soon becomes the hunted.
Alec’s mother is shot by a bullet meant for Julian while Dillon’s new Liber8 task force is put to the test when Kiera must decide how far she will go to stop Julian's murderous future.moreless
Kiera and Carlos discover that a juror on Julian's trial has been compromised and must race to protect his family from a Liber8 plot. Alec is torn between telling the truth at his brother's trial or protecting his mother. Emily reveals she is more than just a pretty face.moreless
Grace is thrown into general holding, but Mitch continues his investigation. Meanwhile, Alex makes a move to take the leadership and attempts to mend some bridges with him.
The killer: Cameron Radcliffe; the victim: Nathan Conroy.
Detectives Flynn and Vega investigate when the body of a young man is found buried in a densely populated urban neighborhood. The investigation has Angie revisiting her experience as a juror. She must also deal with her feelings as Manny heads off on a trip to Europe.
When they discover Malcolm's plan, Oliver and Diggle try to stop him but lose Felicity to a police arrest. Meanwhile, Thea learns that Roy is in danger and goes to The Glades, endangering herself as well, while Oliver risks what's left of his friendship with Tommy for the sake of honesty. In the past, Oliver, Shado, and Slade try to stop Fyers from bringing down a passenger jet.moreless
While Liber8 seems to be trying new tactics to win over the public with their messaging, Kiera is alerted to the possibility that there is another Protector's suit like hers that has been activated somewhere in the city. Alec helps her pinpoint it's general location. The race is on when Sonya and Travis discover the CPS suit, too.moreless