After a group of young revolutionaries break into a company's corporate headquarters and steal $5,000,000 worth of heroin to keep it off the street, they call on San Francisco Police Lieutenant Virgil Tibbs for assistance.
Sidney Poitier
as Virgil Tibbs
Barbara McNair
as Valerie Tibbs
Gerald S. O'Loughlin
as Jack Pecora
Sheree North
as Mrs. Morgan
Fred Beir
as Bob Alford
Allen Garfield
as Benjy
Bernie Hamilton
as Lt. Jessop
Graham Jarvis
as William Martin
Raúl Juliá
as Juan Mendoza
Ron O'Neal
as Joe Peralez
James A. Watson, Jr
as Stacy Baker
Charles H. Gray
as George Morgan
