Complete story — includes the ending
After losing control and killing a criminal, Barnes visits Tetch at Arkham and demands to know if the virus can be cured, but Tetch refuses the possibility. Barnes begins hearing " voices " that urge him to kill more criminals. He finds the mastermind, plastic surgeon Maxwell Symon, who removes his victims' faces to insert on customers who intend to change their faces. Barnes arrests Symon after overcoming the voices. Lee and Mario throw an engagement party, where Barnes makes plans to turn himself into police custody. However, his psychosis overpowers him when he learns Symon has been released due to his powerful connections. Mario threatens Gordon to stay away from Lee. Losing faith in Gotham's justice system, Barnes throws Symon off a window and plans to murder criminals on a larger scale. Symon tells Gordon about Barnes. Meanwhile, Ed fears that Isabella might meet Kringle's fate and decides to end the relationship, encouraged by Oswald. However, Isabella learns of Oswald's feelings and seduces Ed again. Oswald has Gabe kill Isabella.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Gotham season 3. HTML formatting and reference markers removed. · Content license