Desperate to save Caitlin's life, Julian removed her necklace so her body could heal itself. It worked, but also brought back Caitlin's greatest fear: Killer Frost.
Iris: He's a murderer. Barry: I know he's a murderer. But how many murderers have we put in prison? How many bad guys have we taken down? Don't we deserve one win? After everything that we've done? Iris: Life doesn't keep score, Barry.
Abra Kadabra: If you let me go, I will tell you Savitar's greatest secret. It's the key to defeating him. The key to stopping him. Barry: What secret? Abra Kadabra: I know who he is. I know his name.
