While the San Diego Comic-Con teaser for The Flash doesn’t tell us too much about season 4, it centers on a very arresting visual: Iris West, Dr. Caitlin Snow, and Cisco Ramon trying to get a lock on Barry Allen, a.k.a. the Flash. Which would be difficult enough considering his super speed, but there’s also the matter of him being in Speed Force Prison.
The teaser mostly focuses on Iris, coping with Barry’s departure and trying to stay strong, as he had urged her. But when the rest of their friends devise a way to bring him back… well, it seems no one can resist trying to catch the Flash:
https://www.youtube.com/watch?v=bYDdu_mC6cI
The Flash season 4 premieres October 10 on The CW.