GOTHAM: Fish Mooney (Jada Pinkett Smith) tests a potential business associate in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Erin Richards as Barbara Kean in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Richard Gladwell (guest star XXXX) uses a unique weapon to kill his victims in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Detective Harvey Bullock (Donal Logue) tracks a suspect in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Detective Harvey Bullock (Donal Logue, L), Detective James Gordon (Ben McKenzie, C) and Captain Sarah Essen (Zabryna Guevara, R) examine a crime scene in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Fish Mooney (Jada Pinkett Smith, R) and Butch Gilzean (guest star Drew Powell, L) test a potential business associate in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: James Gordon (Ben McKenzie, L) and Barbara Kean (Erin Richards, R) have a fight in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Cory Michael Smith as Edward Nygma in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Detective James Gordon (Ben McKenzie) looks out for a criminal targeting the Mayor's life in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Detectives Harvey Bullock (Donal Logue, L) and James Gordon (Ben McKenzie, R) find a piece of evidence in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX

GOTHAM: Detective Harvey Bullock (Donal Logue) questions a suspect in the "Arkham" episode of GOTHAM airing Monday, Oct. 13 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. Cr: Jessica Miglio/FOX