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