Watch The Flash Season 3 Episode 4 Full HD Online with SUB

Three years ago, Sam Scudder and Rosalind Dillon, former associates of Leonard Snart, were caught in the first explosion of a particle accelerator. In the present, Barry begins to teach Jesse how to use his powers. Harry suggests that the team find his doppelganger from another Earth to replace him in the team once he and Jesse leave. Scudder returns from a trap in the mirror dimension with the ability to transport himself and others through reflective surfaces. He reunites with Dillon, who now has vertigo-inducing abilities, and they go on a crime spree. Barry and Jesse confront them, but are defeated after Barry is trapped in the mirror by Scudder. Caitlin secretly uses her new ice powers to help Barry free himself from his predicament. He and Jesse then successfully capture Scudder and Dillon. After evaluating the candidates, the team recruits the friendly and eccentric H. G. Wells from Earth-19, despite Harry's misgivings. Jessie and her father then return to Earth-2, but not before Harry informs Cisco of Barry's suspicious escape. That night, Caitlin accidentally freezes the shower water, and her appearance begins to show signs of her Earth-2 doppelganger, the Frost Killer.