Wallace brings the case of a death-row inmate, Earl Slavitt, to the CIU. Earl was convicted of murdering federal prosecutor Tom Simon, one of Wallace’s best friends.
As the virus begins to spread in Gotham, the laboratory that is developing a cure is compromised. Mario and Gordon face off before the wedding, Selina meets an unexpected face and Barbara comes to Nygma with information about Isabella.
A stunning turn during the American Revolution prompts Lucy, Wyatt, and Rufus to question whether they’ve been fighting on the wrong side this whole time.
Charlotte is determined to get Lucifer to leave Earth by turning Chloe against him. Meanwhile, Amenadiel has begun working as Charlotte’s soldier, which makes Maze question his loyalty.
Walter’s forced to swim through the deadly La Brea Tar Pits in order to save a woman who’s trapped in the tar before she runs out of oxygen. Elsewhere, Veronica helps Ralph with his troop’s cookie sale, unbeknownst to Paige.