Watch: The Flash “Who Is Harrison Wells?” Promo

Watch a preview above for the next episode of The Flash, “Who Is Harrison Wells.”

The Flash airs Tuesdays at 8pm ET on the CW.

Updated: with trailer below.

Episode synopsis:

JOE AND CISCO TRAVEL TO STARLING CITY FOR ANSWERS ABOUT DR. WELLS — Joe (Jesse L. Martin) and Cisco (Carlos Valdes) head to Starling City to continue their investigation of Dr. Wells (Tom Cavanagh). While in town, the duo enlists the help of Captain Lance (Paul Blackthorne), and Cisco meets the Black Canary (Katie Cassidy), who asks him for a favor. Meanwhile, back in Central City, Barry (Grant Gustin) races to catch a meta-human named Hannibal Bates (guest star Martin Novotny) who can transform himself into every person hetouches – which includes Eddie (Rick Cosnett), Iris (Candice Patton), Caitlin (Danielle Panabaker)and even The Flash. Wendey Stanzler directed the episode written by Ray Utarnachitt & Cortney Norris.