- Title: The Flash – Killer Frost
- wiki: link
“Killer Frost” shakes up Team Flash more than a little. After stepping in with Vibe (Carlos Valdes) to help save the Flash (Grant Gustin) from Savitar, Caitlin (Danielle Panabaker) begins to loose control of her powers and become Killer Frost. Attacking her friends and abducting Julian Albert (Tom Felton), Caitlin becomes desperate to find Doctor Alchemy as she believes a villain capable of bestowing powers on other might be able to take them away. In perhaps the most obvious reveal of the show’s history, we learn the true identity of Alchemy, but another reveal is far more Earth-shattering for Cisco. Sadly, the events of the episode also mean Barry will have no trouble finding things to mope about and blame himself for in the near future (including an unexpected career change).
Wrapping up several plot thread teased over the course of the season so far, “Killer Frost” also allows Wally (Keiynan Lonsdale) to step out of the cocoon and take his first steps to becoming this Earth’s Kid Flash. There’s an interesting note about how Wally is already faster than Barry was after being struck by lightning. We’ll have to see how this plays out, but could it be that Barry is no longer Central City’s fastest speedster? It’s also interesting that Caitlin’s powers are so tied to her mood and personality. It appears, at least from what we see here, that the scientist may never be able to harness her gifts for good. While laying the groundwork for the show’s post-holiday arc, “Killer Frost” answers some looming (if obvious) questions prior to The CW’s big four-part crossover event with Supergirl, Arrow, and Legends of Tomorrow.