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"Jerome is dead. Long live me."
Jeremiah Valeska

"A Dark Knight: That Old Corpse" is the twentieth episode of the fourth season of Gotham. It aired on May 3, 2018.


Chaos erupts at the GCPD, sending Gordon on a wild goose chase for the culprit behind the mass takeover. Meanwhile, a friend of Bruce's becomes paranoid, resulting in rash and destructive behavior.[1]


  • Jeremiah Valeska applying make-up and dyeing his hair in order to hide his transformation is a direct callback to the 1989 live-action movie Batman, where the Joker did the same to give himself a more normal-looking skin tone and hair color resembling his original appearance. Like Jeremiah, he later also revealed his white bleached skin by wiping off the make-up with a cloth.
  • Ecco is as a tribute and predecessor to Harley Quinn, since she also wears a jester costume with a red and black diamond design and acts as the Joker's henchwoman.


  1. Gotham - Episode 4.20 - That Old Corpse - Press Release - SpoilerTV