While working at Arkham run by Dr. Gerry Lang, Gordon investigates a series of attacks on inmates with the help of Dr. Leslie "Lee" Thompkins. Mooney discusses her plan to overthrow Falcone with underboss Jimmy Saviano, who has a disagreement with her on succession. Cobblepot is arrested by the police for trying to further extort some fishermen already paying protection money to Maroni. The former is freed by the latter, who initiated the arrest to warn Cobblepot about hubris. Montoya ends her relationship with Barbara. Gordon, Bullock, and Captain Essen discover that the person attacking inmates was Jack Gruber,[24][25] who then escapes from Arkham with his associate Aaron Danzig, after killing several guards and Dr. Lang. Saviano tries to convince Gilzean to change sides, but the latter kills him instead. Selina takes an ill Ivy to Gordon's. Barbara calls and mistakes Ivy as his girlfriend.