Don Medford Director Sidney Poitier Virgil Tibbs Actor Barbara McNair Valerie Tibbs Actor Gerald S. O'Loughlin Jack Pecora Actor Sheree North Mrs. Morgan Actor Fred Beir Bob Alford Actor Allen Garfield Benjy Actor Bernie Hamilton Lt. Jessop Actor Raul Julia Juan Mendoza Actor Ron O'Neal Joe Peralez Actor James A. Watson Jr. Stacy Baker Actor Charles H. Gray Night Watchman Actor Daniel J. Travanti Sgt. Chassman Actor Billy Green Bush Dave Thomas Actor Max Gail Rudy Actor Ross Hagen Chet Actor Paul Jenkins Tony Actor Garry Walberg Capt. Stacy Actor Johnny Haymer John Bishop Actor Walter Mirisch Producer James R. Webb Screenwriter Joseph F. Biroc Cinematographer Ferris Webster Film Editing Gil Mellé Original Music George B. Chan Art Director Marvin March Set Decoration Lynn Stalmaster Casting