CW | 8:00 pm

With Reign (Odelle Annable) continuing to wreak havoc in National City, Supergirl (Melissa Benoist) enlists the help of Saturn Girl (guest star Amy Jackson), as well as two of Supergirl’s former foes, Psi and Livewire (guest stars Yael Grobglass, Brit Morgan). Together, they set off on a mission to Fort Rozz to retrieve a prisoner who claims to hold information on how to stop Reign once and for all in the new episode "Fort Rozz." Chyler Leigh also stars.