Eschewing its traditionally bright nature, The Flash Season 3 took a dark turn, which permeated all of the season's ongoing arcs. The finale culminated with Barry going head-to-head with a evil version of himself, and the cliffhanger ending even saw the Scarlet Speedster ostensibly sacrifice himself to save Central City.

The heavier aspects of the show's new direction didn't sit right with some fans, and it looks like the creatives behind the series have listened. In a behind-the-scenes featurette, executive producer Andrew Kreisberg promised a much more optimistic version of The Flash when The CW series returns this fall.

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"Last season got really dark, and on purpose. We wanted to do that,"Kreisberg explained in a special sneak peek video for Season 4. "We're not gonna out-dark ourselves. We really wanted to... pivot and sort of lean in to like fun and light and brightness. So the title of the [Season 4] premiere is actually 'The Flash Reborn,' and for us it's sort of like a little bit of a restart and diving into sort of more comedy and more fun, and more brightness and more excitement."

Starring Grant Gustin as the Scarlet Speedster, The Flash returns Tuesday, October 10 at 8 p.m. ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker, Keiynan Lonsdale and more.