On this episode of Gotham...

Jack Gruber, The Electrocutioner, hunts down those who betrayed him. He returns to an electronics store before heading to find Sal Maroni.

He manages to attack Sal at lunch, but fails to kill him.

Jim keeps Sal and Oswald, who has been called to see Carmine, at the police station to wait for Jack.

Jack arrives, but Jim defeats him with rubber soled shoes (supplied by Ed Nygma).

Fish tells Carmine she's taking over, but Oswald reveals Liza was sent by Fish. Carmine chooses to stay rather than skip town.

Carmine kills Liza and captures Fish.

Barbara visits her parents.

Dr. Leslie Thompkins meets Jim and the two kiss.

Jim gets his position as detective back.