The CW has released an “Inside” video and a preview clip to promote episode of The Flash which is called “Think Fast.” Arrow’s David Ramsey guest stars as his character John Diggle!
You can see the “Inside” video with Executive Producer Todd Helbing as well as an individual preview clip below.
If you missed them before, here are a description and preview images:
DAVID RAMSEY GUEST STARS — When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry (Grant Gustin) realizes the only way he can stop him is if he allows Cisco (Carlos Valdes) and Caitlin (Danielle Panabaker) to accompany him into the facility. Still shaken by Ralph’s death, Barry isn’t sure he wants to risk any more of his friends’ lives and considers taking on DeVoe solo. Viet Nguyen directed the episode written by Sam Chalsen & Kristen Kim (#422). Original airdate 5/15/2018.