The Flash (2014): Season 2, Episode 5

2 - 5: The Darkness and the Light

Barry (Grant Gustin) learns a new breacher, Dr. Light, has come through the portal and sets off to capture her. Jay (guest star Teddy Sears) tells Barry that Dr. Light was not a threat on Earth-2 and that Barry can reason with her. However, during a fight with The Flash, she blinds him and drops some shocking news about Zoom. Meanwhile, Barry and Patty (Shantel VanSanten) go out on a date.