According to the official description for "Potential Energy," the midseason premiere of "The Flash," Barry will consider telling Patty Spivot his secret. Meanwhile, a new meta-human will slow everything down for Team Flash, and Joe and Iris work on getting to know the newest member of their family: Wally West.
"Potential Energy" -- (8:00-9:00 p.m. ET) (TV-PG, LV) (HDTV)
JOE AND IRIS GET TO KNOW WALLY -- Now that they've grown closer, Barry (Grant Gustin) considers telling Patty (guest star Shantel VanSanten) that he is The Flash. Meanwhile, Joe (Jesse L. Martin) and Iris (Candice Patton) try to get to know Wally (Keiynan Lonsdale), and the team hunts down a meta-human who can slow time itself. Rob Hardy directed the episode written by Bryan Q. Miller (#210). Original airdate 1/19/2016.