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