The Flash (2014) (2014)
S4E5 Girls Night Out
Episode Overview
After receiving a chilling threat from her former boss, Amunet, Caitlin grows anxious that her past as Killer Frost might resurface. Meanwhile, Felicity arrives in Central City to join the festivities for Iris's bachelorette party, while Cisco, Joe, and the guys plan a boys' night out to celebrate Barry.
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S4