"Nothing's Shocking" is the eighth episode of the fifth season of Gotham. It will air on February 28, 2019.
Bullock's past comes back to haunt him when he and Gordon investigate two murders at Sirens. Meanwhile, Bruce and Alfred explore the tunnels beneath the city, and Penguin and Nygma's plans to escape are thwarted by the least likely of suspects.
Arthur Penn reappears and is revealed to be the Batman supervillain "The Ventriloquist". Originally his role as Ventriloquist was going to be cut from the season due to it being shortened, however when FOX granted season 5 two extra episodes, which allowed the producers and writers of the show to go ahead and use Penn as the Ventriloquist.