T - The Flash (2014) - Season 4 Episode 3 - Luck Be a Lady

Barry and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky nicknamed Hazard, who has the ability to give others bad luck, while cashing in the benefits for herself. Meanwhile, Harry Wells returns to Earth-1 to give Wally a message from Jesse.

Aired: 24 Oct 2017