Bill Cosby and Robert Culp had been a pioneering interracial pair in the 1960s series I Spy, but the actors' reunion in this grimy, violent, nihilistic thriller (directed by Culp) is about a million miles away from their light TV capering. As two burned-out gumshoes pursuing a mysterious femme fatale, a missing suitcase full of stolen cash, and a trail strewn with corpses, Cosby and Culp lose everything that has any meaning to them — except their loyalty to each other.