The episode revolves around Gordon and Bullock tracing to a serial killer who has been targeting corrupt police officers.
At the fight club, Nygma (Cory Michael Smith) talks with Lee (Morena Baccarin) for help in order to fix his identity crisis but she angrily refuses to help him following his previous actions.
Cobblepot (Robin Lord Taylor) and Sofia (Crystal Reed) meet in order to fully acknowledge each other's partnership.
After interrogating Cobblepot, Gordon gets a clue from a man, Wally Clarke (Will Janowitz), who applied for a license, discovering a headless pig in his apartment.
In the fight club, Grundy (Drew Powell) manages to beat another fighter for money, much to Nygma's delight.
Lee, after finding her medicine is running out in the clinic, decides to accept Nygma's money and help him with his identity crisis.
[1] In September 2017, Michael Cerveris joined the show as Lazlo Valentin / Professor Pyg, in a multi-episode role.
"[3] He also added that, "When they [the writers] had somebody who played Sweeney Todd, they knew the direction they wanted to go... [Broadway fans who don't watch Gotham] might give it a look simply because of that, and find that they have a new favorite show.
"[5] David Mazouz, Sean Pertwee, Erin Richards, Camren Bicondova, Jessica Lucas, Chris Chalk, and Alexander Siddig don't appear in the episode as their respective characters.
In October 2017, it was announced that the guest cast for the episode would include Anthony Carrigan as Victor Zsasz, Michael Cerveris as Professor Pyg, Marina Benedict as Cherry, and Will Janowitz as Wally Clarke.
Matt Fowler of IGN gave the episode a "good" 7.3 out of 10 and wrote in his verdict, "The first live-action Professor Pyg certainly looked and sounded cool, but the attempt to weave him into the ongoing plot involving the corrupt GCPD only diluted his demented nature and turned him into a drag.
That wondrous title refers to the arrival of Batman rogue Professor Pyg, played with terrifying enthusiasm by two-time Tony-winner Michael Cerveris.
"[12] Lisa Babick of TV Fanatic gave the series a perfect 5 star rating out of 5, writing "Professor Pyg has arrived, and he's as gruesome as ever.
"[9] Marc Buxton of Den of Geek gave wrote, "Last week I asked, when did Gotham become a guided tour anthology series about the DC Universe?
We have a debut of a very modern DC villain, a weird Of Mice And Men riff centering on an underground fight club and a budding romance for the Penguin.