S02E17 Flash Back The Flash
calendar_today 2014. Greg Berlanti. Geoff Johns. Andrew Kreisberg.
people Grant Gustin. Candice Patton. Danielle Panabaker. Carlos Valdes.
After discovering the true identity of Zoom, Barry is more determined than ever to stop him. To increase his speed, Barry goes back in time to look for help from an arch nemesis.