The Flash 2×04 “The Fury of Firestorm” – Barry (Grant Gustin) and the team look for another Firestorm match for Dr. Stein (Victor Garber). When the team meets Jefferson “Jax” Jackson (guest star Franz Drameh), Caitlin (Danielle Panabaker) has her reservations about whether Jax is the right match for Dr. Stein. Iris (Candice Patton) surprises Joe (Jesse L. Martin) while Barry and Patty (guest star Shantel VanSanten) grow closer. Stefan Pleszczynski directed the episode written by Kai Yu Wu & Joe Peracchio (#204). Original airdate 10/27/2015.