Watch a 1 min Promo for The Flash “Who Is Harrison Wells”

Another extended promo for The Flash “Who is Harrison Wells” has been released. The 1 minute promo features new footage from the highly anticipated episode.

In the episode, “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 episode will air this Tuesday, April 21.

Source: CW