Watch The Flash 4×17 Promo “Null and Annoyed”

The promo for the new episode of The Flash has been released. This new episode is titled “Null and Annoyed” and it will air on April 10.

In this new episode, Barry and the team run into quite the meta-human who can fill people with helium. As one can see from the promo, this doesn’t got o well for the team.