A Slight Case of Murder (1999)

In the midst of a spat, film critic Terry Thorpe accidentally kills his lover. Though Thorpe covers his tracks, he raises the suspicions of a private investigator, who then tries to blackmail him. Thorpe also falls under the watchful eye of Detective Fred Stapelli, a cop who is intent on becoming a screenwriter. Before long, Thorpe's girlfriend, Kit, and Stapelli's wife, Patricia, are roped into the case.