Trailer
Cast
George Kennedy
Sgt. Lew Slade
Alan Vint
Ralph
Ric Carrott
National Guardsman (uncredited)
Paul LeClair
National Guardsman (uncredited)
Debralee Scott
Kathie (TV version) (uncredited)
Marjoe Gortner
Jody
H.B. Haggerty
Pool Player
Tim Herbert
Las Vegas Man
Jerry Hardin
Man (uncredited)
Monica Lewis
Barbara
John Randolph
Los Angeles Mayor
Jesse Vint
Buck
Leoda Richards
Emergency Soup Kitchen Worker in Wilson Plaza (uncredited)
Erik Cord
Office Worker (uncredited)
Polly Burson
Earthquake Survivor (uncredited)
David S. Cass Sr.
Sherriff Merle (uncredited)
Don Wilbanks
Dam Workman with Blowtorch (uncredited)
Bob Cunningham
Dr. Frank Ames
Bruce M. Fischer
Man (uncredited)
Jimmy Nickerson
Seismology Graduate Student (uncredited)
Arthur Tovey
Citizen (uncredited)
Diana Herbert
Woman (uncredited)
Bert Kramer
Policeman (uncredited)
Ava Gardner
Remy Royce-Graff
John Elerick
Carl Leeds
Sam Chew Jr.
Tony (Kathie's Husband) (uncredited)
Scott Hylands
Asst. Caretaker
Donald Moffat
Dr. Harvey Johnson
Gene Dynarski
Dam Caretaker
Reb Brown
Young Man on Motorcycle (uncredited)
Frances Osborne
Housewife (uncredited)
Lorne Greene
Sam Royce
Lloyd Nolan
Dr. James Vance
Lloyd Gough
Bill Cameron
Alex Brown
Pool Player
Ernest Harada
Seismologist (uncredited)
Barry Sullivan
Dr. Willis Stockle
Gabriel Dell
Sal
John Dennis
Brawny Foreman
Stuart Nisbet
Man on Loudspeaker (voice) (uncredited)
Charlie Picerni
Pool Player (uncredited)
Keith Walker
Man on the Radio (voice) (uncredited)
John S. Ragin
Chief Inspector
Karl Lukas
Man (uncredited)
Grant Owens
Police Officer (uncredited)
Charlton Heston
Stewart Graff
Walter Matthau
Drunk
Kenny Endoso
Bar Cook (uncredited)
Richard Roundtree
Miles Quade
Victoria Principal
Rosa Amici
Pedro Armendáriz Jr.
Chavez
George Murdock
Colonel
Lonny Chapman
LAPD Captain (uncredited)
Jeannie Epper
Blonde Woman (uncredited)
Bob Harks
Man Fleeing Movie Theatre (uncredited)
Geneviève Bujold
Denise Marshall
Kip Niven
Walter Russell
Josh Albee
Boy with Radio (uncredited)
George Sawaya
Deputy Sherriff (uncredited)
Dean Smith
Pool Player (uncredited)
Eddie Smith
Citizen (uncredited)
Dick Tufeld
Opening Narrator (uncredited)
Sandy Ward
Studio Guard (uncredited)
Dick Warlock
Diver at Hollywood Reservoir (uncredited)