Sadly, during Season 8, Episode 13, titled "Death Falls," Killer Frost dies in an attempt to absorb Deathstorm's powers. Fans will recall that the first time Caitlin's doppelgänger appeared was during Season 2, the same season actor Robbie Amell joined the show as Deathstorm. The poetry of her character's death is reflected in its planning, and Danielle revealed to TV Line that she and showrunner Eric Wallace worked on the idea together.

Danielle said, "My only question was, ‘Are we really going to kill her?’ Because it didn’t feel right to do a fake-out. This needed to be her real death, in order to feel truthful and honest." She added, "It was always the plan to hopefully have Robbie [Amell] come back as Deathstorm, and I’m so glad that worked out with his schedule. He and I have always worked really good together."