Harry Calder
George Segal
Agent Hoyt
Richard Widmark
Wayne Moore
G.F. Rowe
Police Captain Christie
Wayne Tippit
Demerest
Michael Bell
Mayor
Robert Quarry
Mandell
Richard Altman
Jackie
Gloria Calomee
Owner #2
Quinn K. Redeker
Hippie Boy
Craig Wasson
Girl in Line
Jean Rasey
Boy in Line
Greg Elliot
Young Man
Timothy Bottoms
Coaster Attendant
Tara Buckman
Tourist Mother
Monica Lewis
Tourist Father
Dick Wesson
Bomb Squad #1
Bruce Kimball
Bomb Squad #2
Bruce French
Bomb Squad #3
Stephen Mendillo
Bomb Squad #4
Larry Holt
Bomb Squad #5
Gene Tyburn
Owner
Arthur Peterson
Agent with Red Hat
Mark Thomas
Keefer
Harry Guardino
Self - Sparks (uncredited)
Ron Mael
Russell Mael
Messenger (uncredited)
Steve Guttenberg
Selby
Bill Sorrells
Fran
Susan Strasberg
Simon Davenport
Henry Fonda
Tracy Calder
Helen Hunt
Helen
Dorothy Tristan
Benny Neilson
Harry Davis
Bert Lyons
Stephen Pearlman
Original Music Composer
Lalo Schifrin
Story
Tommy Cook
Associate Producer
Stunts
Bob Herron
Director
James Goldstone
Production Design
Henry Bumstead
Screenplay
Richard Levinson
Producer
Jennings Lang
Director of Photography
David M. Walsh
Editor
Edward A. Biery
Richard M. Sprague
William Link
Screenstory
Sanford Sheldon
Jadie David