The Flash 3x04 "The New Rogues" Extended Promo - Barry (Grant Gustin) continues to train Jesse (guest star Violett Beane) and when a new meta human, Mirror Master (guest star Grey Damon), appears on the scene he lets her tag along. Mirror Master has teamed up with his old partner, Top (guest star Ashley Rickards), and is looking for Snart (Wentworth Miller) to even a score. Jesse is quick to join the chase but defies one of Barry’s orders which results in disastrous consequences. Stefan Pleszczynski directed the episode written by Benjamin Raab & Deric A. Hughes (#304). Original airdate 10/25/2016.