Original air date: 03/30/2021 Runtime: 42:23 min. When a powerful new villain, Psych (guest star ENNIS ESMER), channels and amplifies everyone’s fears in order to wreak havoc on Central City, Barry realizes, with Cecile’s help, that he must face his own worst fear in order to beat this new threat. Meanwhile, Joe is surprised when Kristen Kramer (guest star CARMEN MOORE) from the Governor’s Municipal Logistics Commission drops into CCPD for a visit. Iris warns her father to dig deeper on why Kristen is actually there. Caitlin and Frost argue about how to live their lives.
Original air date: 04/06/2021 Runtime: 42:23 min. Cisco and Chester travel back in time and get stuck in 1998, repeating the same day over and over again. The key to returning home is at Chester’s childhood home but he refuses to visit. Meanwhile, Iris forges a connection with the speed force.
Original air date: 04/13/2021 Runtime: 42:10 min. When a mysterious ice powered enemy frames Frost for a brutal crime, she must find a way to clear her name. Meanwhile, Barry and Iris have a surprise houseguest, and Joe continues to deal with Kristen Kramer (guest star CARMEN MOORE).
Original air date: 05/04/2021 Runtime: 42:23 min. With Frost facing an unjust punishment for her past crimes, Caitlin goes to great lengths to save her sister. Meanwhile, Barry’s efforts to protect Speed Force Nora (recurring guest star MICHELLE HARRISON) lead to a shocking discovery.