There’s been a lot of superhero-related content coming out of San Diego the last few days, but one that manages to gobble up attention is the CW’s Flash show now approaching it’s fourth season. Following up on the ending of season 3, the trailer makes no bones about the fact everyone and the show is expecting Barry Allen to return, except surprisingly for Iris. Which hopefully will lead to a refreshing change of pace for her character.

The trailer has a lot going on so far: the return of Peek-A-Boo, Robot samurai, the return of Caitlin Snow and hopefully what looks like Wally West in a Flash costume. Take a look and tell us what you think.