The team is on high alert after Cicada II threatens to unleash a dangerous virus on The Flash. "The Girl With The Red Lightning" is the 21st episode of the show's fifth season.
The meta criminals (Bug-Eyed Bandit, Weather Witch, Rag Doll, and XS) unite and go over the plan one more time before following through with their plan to steal military grade weaponry.
Caitlin and Ralph realize Cicada 2 has stolen Cisco's failed prototypes for the cure in order to use it as a poison against every metahuman in Central City.
Iris: Whatever the future brings we’re gonna deal with it when it gets here, and change it if we need to. Cisco: She’s right. If there’s anything Team Flash is good at, it’s handing the future it’s own ass and then some Caitlin: What he said.
Barry: Nora wait what are you doing?! You can't touch that, you'll contaminate the evidence! Nora: Sorry, you mean you don't have a scene wide modified bi-sonic frequency field to avoid cross contamination? Barry: I don't even think we have some of those WORDS yet!