Brie Larvan (guest star Emily Kinney), Joss Jackam (guest star Reina Hardesty) and Peter Merkel (guest star Troy James) return to Central City.
Chris Klein (Election, Oz, American Pie) has joined the cast to play the new scourge of Central City, Cicada.
Meanwhile, Cisco (Carlos Valdes) makes a bold decision.
The CW has released the first promo for The Flash episode 5.20 titled “Gone Rogue,” featuring Nora leading a group of female villains consist of the Weather Witch, Queen Bee and Rag Doll as they kidnap Cisco and Sherloque.