Take a look @ footage, plus images from "The Flash" episode "The Darkness and The Light", written by Ben Sokolowski, Grainne Godfree and directed by Steve Shill, airing November 3, 2015 on The CW:
"...'Barry' (Grant Gustin) learns a new breacher, 'Dr. Light', has come through the portal and sets off to capture her.
"'Jay' (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..."
Click the images to enlarge and Sneak Peek "The Darkness and The Light"...