"Deus Lex Machina"[2] is the seventeenth episode of the fifth season of Supergirl, and the one-hundred-fourth episode overall. It aired on April 26, 2020[1].
Lex proceeds to lay an intricate plan to bring Lena closer to him, defeat Leviathan’s latest attack, and pit Supergirl and team against Leviathan. It is also revealed how Lex came into power after Crisis.[src]