What happens after Barry ran back in time to the night of his mother's death, and decided to save her - erasing the whole timeline? Watch season 3 sneak peek.
The released sneak peek features new villains, and a new speedster.
Following the shocking season two finale, CW announced that the series will return for its third season on October 4, 2016.
On the season finale, the mysterious man in the iron mask and Zoom’s prisoner was revealed to be the real, Earth-3 version of Jay Garrick, played by John Wesley Shipp (Barry's Father - Henry).
The shocking twist of the season came when Barry ran back in time to the night of his mother's death, and decided to save her - erasing the whole timeline.
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"The Flash" stars Grant Gustin as Barry Allen/The Flash, Candice Patton as Iris West, Rick Cosnett as Eddie Thawne, Danielle Panabaker as Caitlin Snow, Carlos Valdes as Cisco Ramon, Jesse L. Martin as Detective Joe West, Teddy Sears as Jay Garrick, Keiynan Lonsdale as Wally West, Shantel VanSanten as Patty Spivot, Violett Beane as Jesse Quick, Demore Barnes as Tokamak, and Tony Todd as Zoom.