The police procedural, or police crime drama, is a subgenre of procedural drama and detective fiction that emphasizes the investigative procedure of a police officer or department as the protagonist(s), as contrasted with other genres that focus on either a private detective, amateur investigator or characters who are the targets of investigations. While many police procedurals conceal the criminal's identity until the crime is solved in the narrative climax (the so-called whodunit), others reveal the perpetrator's identity to the audience early in the narrative, making it an inverted detective story or "howcatchem". Whatever the plot style, the defining element of a police procedural is the attempt to accurately depict the profession of law enforcement, including such police-related topics as forensic science, autopsies, gathering evidence, search warrants, interrogation and adherence to legal restrictions and procedure.
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