T - The Flash (2014) - Season 5 Episode 19 - Snow Pack

When Icicle returns to enact the next phase of his devious plan, Caitlin and her mother, Dr. Carla Tannhauser, must resolve their long-combative relationship to defeat the icy monster. After Barry makes a big decision about their family without consulting her, Iris decides to take matters into her own hands.

Aired: 23 Apr 2019