Here’s the extended trailer for next week’s episode of The Flash, titled “We Are The Flash”. It’s the finale for the show’s fourth season.
And here’s the official synopsis for the episode, which seems to be keeping details deliberately vague.
“We Are The Flash”
SEASON FINALE — Team Flash gets help from a surprising ally in their battle against DeVoe (Neil Sandilands). David McWhirter directed the episode written by Todd Helbing & Eric Wallace (#423). Original airdate 5/22/2018.
We’re promised the answer to a few mysteries in the episode. What do you hope to see in it?