Richard Todd
— Dr. Jonathan Barnett
James MacArthur
— Larry Osborne
Susan Oliver
— Patricia Cross
Mark Goddard
— Elliott
Carol Booth
— Harriet Henning
Marc Cavell
— Mario
Janee Michelle
— Lamelle (as Janeé Michelle)
Ronnie Eckstine
— Bobby
Michael Evans
— Rev. Spencer
Hortense Petra
— Mrs. Sacaccio
Jimmy Lloyd
— Mr. Henning
Mario Roccuzzo
— Hippie on LSD
Frank Coghlan Jr.
— Reporter in Park
Richard Hoyt
— Reporter
Anthony Eustrel
— Citizen (uncredited)
Gary Busey
— Hippie with Loudspeaker (uncredited)
Mel Novak
— Intern Smith
Donnie Brooks
— Specialty Act
Bill Baldwin
— Reporter (uncredited)
George DeNormand
— Policeman (uncredited)
Paul Hampton
— American Football Player in Park (uncredited)
Clegg Hoyt
— Policeman in Park (uncredited)
Mitchell Rhein
— Man in TV Audience (uncredited)
Robert R. Stephenson
— Policeman (uncredited)
Dick Winslow
— Policeman (uncredited)