When the key witness in a homicide ends up dead while being held for questioning by the police, Gordon suspects that it’s an inside job and looks to an old friend for information. Meanwhile, Oswald Cobblepot takes control of one of Fish Mooney’s prized possessions, as she gets a gets a small taste of her own medicine.

Gordon seeks information about the controversy involving Loeb; Fish's allegiance with the prisoners is questioned; and Bruce copes with the aftermath of an attack close to home.

Gordon and Barnes continue cleaning up Gotham, and Gordon comes face-to-face with one of the city's most dangerous hitmen, Eduardo Flamingo. Meanwhile, Nygma and Penguin cross paths again, and Bruce pressures Galavan into handing over the name of his parents' murderer.

After leaving Arkham Asylum, Barbara attempts to make amends with Gordon. Then, Bruce and Alfred track down one of Thomas Wayne's former friends from Project Chimera, but Hugo Strange disrupts their plans.

After coming in contact with a substance by the hand of Mad Hatter, Jim Gordon gets led on a psychedelic trip and must confront his past, present and future. Meanwhile, Penguin struggles with Nygma’s new relationship.

Nygma convinces himself that he doesn't need Penguin to succeed and begins to introduce himself to Gotham as "The Riddler." Bullock and Lucius Fox get caught up in Nygma's mind games, while Gordon learns troubling news about his father's death. Meanwhile, the Court of the Owls reveals its next move.