The Flash is the latest television series to be added to The CW roster and we have a new official extended trailer. Based upon the beloved characters published by DC Comics, this spinoff to Arrow will be lead by cult television producer Greg Berlanti along with Andrew Kreisberg and Geoff Johns. Grant Gustin will be starring as the protagonist Flash (Barry Allen) alongside Candice Patton, Rick Cosnett, Danielle Panabaker and more. If you are unfamiliar with the comic series, the basic premise is that a regular human being named Barry Allen gets struck by lightning after a particle accelerator explosion and wakes up with the ability to move at superhuman speeds, thus we have our superhero, Flash. The Flash will be airing soon on Tuesday nights on The CW Television Network.