The CW network has released the synopsis for episode #119 of The Flash, which you can check out below. The installment, titled “Who is Harrison Wells?” is officially described as follows:
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 (guest star Paul Blackthorne), and Cisco meets the Black Canary (guest star 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 he touches – which includes Eddie (Rick Cosnett), Iris (Candice Patton), Caitlin (Danielle Panabaker) and even The Flash.
The Flash “Who is Harrison Wells?” was directed by Wendey Stanzler and written by Ray Utarnachitt & Cortney Norris. The episode airs Tuesday, April 21, at 8pm on The CW.