The Runaway Dinosaur

"I'm talking to the Speed Force?"

- Barry Allen to the Speed Force "The Runaway Dinosaur" is the twenty-first episode of the second season of The Flash, and the forty-fourth episode overall. It aired on May 10, 2016.

Synopsis
With Barry gone, the team must figure out a way to handle the return of an old enemy – Girder. Realizing Girder is retracing his steps from his last attack, Iris volunteers to act as bait to trap him in S.T.A.R. Labs. Meanwhile, Barry fights to return to his old life.

Trivia

 * Cisco gives many zombie references in the episode
 * The Walking Dead, referencing the long run show about the zombie apocalypse.
 * Calling Girder "iZombie," the CW run TV show on which Greg Finley had a recurring role.
 * When Barry shared Speed Force momentarily to revive Jesse, this was an ability that in the comics was exclusive to Wally West as a speedster.