Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret.

When the Legends arrive in Chicago, they come across a speakeasy that caters to a diverse crowd, however their presence results in upsetting a mob who in turn burn down…

On their first official mission to assassinate suspected “butterflies,” Economos and Murn bond, and Peacemaker and Harcourt reach an understanding. But the whole job goes sideways with the arrival of…