- Grant Gustin (Barry Allen / The Flash)
- Candice Patton (Iris West-Allen)
- Danielle Panabaker (Khione)
- Danielle Nicolet (Cecile Horton)
- Kayla Compton (Allegra Garcia)
- Brandon McKnight (Chester P. Runk)
- Jon Cor (Mark Blaine / Chillblaine)
The Flash — S0E56
Episode: The Evolution of Killer Frost
Air Date: 2019-08-27
Runtime: 11 min
Overview
Follow Caitlin Snow's journey as her relationship with her alter ego, Killer Frost, helps transform the rogue into a hero. Season 5 featurette.