Book 4: I've Changed

Killer Frost Origin Story
The fourth and final installment - Be sure to read the previous books first

1: "Everything Has Changed"
2: "Suicide Squad"
3: "Secret Society of Super Villains"

It's been about eight months since Caitlin supposedly died, Team Flash had already begun falling apart. Julian moved back to England, Wally had joined the Legends, and Iris returned to her normal reported life not wanting to be reminded of the burden. CIsco and Barry are trying their best to maintain team Flash, but not without repercussions. But was never the same. The team would have surely continued to go downhill if an unexpected visitor had not shown up.

Was she back for good, and how? Is she even the same, or is she forever changed?