Complete story — includes the ending
A man wearing a pig's head begins killing police officers acting as Cobblepot's bagmen. Deducing that the killer intends to fight corruption, Gordon and Bullock find the last target but are too late to prevent his death, leading to the duo's capture. Gordon frees himself before the killer cuts Bullock's throat to facilitate his escape. Gordon tells Bullock that he knows the latter has also been on Cobblepot's payroll, demanding him to cease it. "Professor Pyg" is revealed to have larger-scale plans. Meanwhile, Cobblepot suspects Sofia's intentions and confronts her, but is deceived again when he learns that she has been constructing an orphanage. Nygma begins making money using Gilzean, trying to hire Thompkins to restore his genius. After running out of medicine in her private clinic, she accepts Nygma's offer.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Gotham season 4. HTML formatting and reference markers removed. · Content license