"Maniac Cop" is a 1988 horror film directed by William Lustig. The story revolves around a supernatural police officer, Matt Cordell, who is wrongfully imprisoned and seeks revenge on those who betrayed him. As he goes on a killing spree, the film explores themes of corruption and fear within the police force. The movie features a mix of slasher and action elements, with a unique twist on the typical cop narrative. It stars Bruce Campbell as a detective trying to stop the rampaging officer, while also highlighting the public's growing distrust of law enforcement.