Myr'nn inadvertently causes psychic disturbances at the DEO; Supergirl must work with J'onn to contain the chaos; Mon-El begins training Kara in fighting techniques he's learned in the future.
Quest roles:
Carl Lumbly(Myr'nn J'onzz), Curtis Lum(Demos), Krys Marshall(Julia Freeman / Purity), Laurie Metcalf(Mary McGowan), Paul Lazenby(Goon), Rochelle Okoye(Finhead), Glenn Ennis(Draaga)