Supergirl Season 6 - Chyler Leigh as Alex Danvers - Promo Trailer HD - DAVID HAREWOOD DIRECTS - As the Super Friends brave the Phantom Zone to bring Supergirl (Melissa Benoist) home, each member of the team is confronted by visions of their worst fear. David Harewood directed the episode written by J. Holtham & Elle Lipson (607). Original airdate 5/11/2021