Strike Force is an American action-adventure/police procedural television series that aired on ABC during the 1981–1982 television season, and was produced by Aaron Spelling Productions. The program stars Robert Stack as Capt. Frank Murphy, the leader of a special unit of specialized detectives and police officers whose job is to stop violent criminals at any cost. Mixing elements of Stack's classic TV series The Untouchables from 20 years earlier with doses of Mission: Impossible and Dirty Harry, the series immediately provoked controversy over its violence – at one point the series was labeled the most violent in American TV history – though the series attempted to interject liberal amounts of humor into its regular characters and balanced the violence by focusing on the detectives' personal lives.