A mysterious immortal named Vandal Savage comes hunting for Kendra, and Barry and Cisco take her to Star City seeking Oliver's help. Meanwhile, Caitlin and Harrison create a speed enhancer, Velocity-6, but they need Jay to test it and he refuses.moreless
Drill makes his final move in a deadly end-game.
Sean has no choice but to help the government find a way to stop Drill, but asks for a night alone with his family first. Meanwhile, Lean continues communicating with Drill through Minx, and Frommer orders Jessup to take Henry into custody.moreless
Freya is about to get engaged to Dash, but keep dreaming about a mysterious guy. When she finally meet this guy, she learns that it is the brother of Dash. They have a uncontrolled actraction to each other. In the meantime, Freya is trying to convince her sister Ingrid that she has powers. She can read Aura's and dreams come true. Ingrid doesn't believe that she has powers, even Ingrid has studied witchcraft. Till a evil entity is starting to attack them. their mother Joanna get's arrested because of it and Freya is captured in a picture. Before Joanna is taken away by the cops, she tells her daughter Ingrid that they are witches with powers and that Ingrid is the only one, who can save her sister.
Henry's old captain believes he's solved a murder, but his Alzheimer's has caused him to forget the most important details: the crime, and who committed it. Henry calls in Shawn and Gus who find themselves investigating a murder that happened decades ago – or was it just the other day? – and only the faulty memory of the retired officer gives them any hope of closing the case.moreless
Dr. John Martin, a negotiator for the Department of Energy Nuclear Response Team, is called in when a disgruntled grad student takes hostages at a university. The student, Seth Todtman claims to have invented a cold-fusion bomb and is threatening to detonate it, killing millions, unless the government brings him five people on a list and kills them for him. Martin's colleagues dismiss Todtman as a crank, until a sample device he provides goes off with megaton force, wiping out a DOE team and the top-secret facility where they work. Faced with an impossible choice, Martin meets with Todtman face to face and tries to understand the logic behind his rage at the people he wants killed: cruel foster parents, corrupt professors, a heartless librarian. As the clock ticks, Martin tries to reason with Todtman while the military tries to find a way to disarm the device. But, even if they stop Todtman, can they stop the knowledge he has unleashed on the world?moreless