The Flash: Joe Learns Of Wally West In Midseason Finale Sneak Peek

The CW has released a new clip from tonight's midseason finale of The Flash: "Running to Stand Still."

Barry (Grant Gustin) and Iris (Candice Patton) meet with Joe (Jesse L. Martin) to inform him that he has a son and his name is Wally West (Keiynan Lonsdale). Joe is emotionally rocked by the revelation.

Check out the sneak peek in the video below.

MARK HAMILL, WENTWORTH MILLER AND LIAM MCINTYRE RETURN; KEIYNAN LONSDALE JOINS THE CAST AS WALLY WEST — When Mark Mardon AKA The Weather Wizard (guest star Liam McIntyre) returns to break Leonard Snart AKA Captain Cold (guest star Wentworth Miller) and James Jesse AKA The Trickster (guest star Mark Hamill) out of Iron Heights, Barry (Grant Gustin) must stop these rogues from taking over Central City during Christmas. Meanwhile, Joe (Jesse L. Martin) and Iris (Candice Patton) meet Wally West (Keiynan Lonsdale).

"Running to Stand Still" episode of The Flash airs tonight at 8PM on The CW.