Supergirl: Season 5, Episode 19

5 - 19: Immortal Kombat

Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she'd trust again - Lena. Nia keeps dreaming about Brainy (Jesse Rath) but struggles with what the dreams are trying to tell her. Meanwhile, Brainy realizes there is only one way to stop Lex.