2.5 The Darkness and the Light (The Flash 2014)

Plot Summary
Cisco, Caitlin, and Barry question Dr. Wells of Earth-2. When Joe enters and opens fire on him, Barry saves Dr. Wells. In a flashback of 8 months ago in Earth-2, Dr. Wells introduces an app that can detect any metahuman. Moments later, Jay Garrick arrives to demand Dr. Well to admit he created all the Metahumans.