Stuart Whitman as Roy Bennett

Janet Leigh as Gerry Bennett

Rory Calhoun as Cole Hillman

DeForest Kelley as Elgin Clark

Paul Fix as Sheriff Cody

Melanie Fullerton as Amanda Bennett

Chris Morrell as Jackie Hillman

Chuck Hayward as Jud

Henry Willis as Frank

Francesca Jarvis as Mildred

William Elliott as Dr. Leopold

Bob Hardy as Professor Dirkson

Richard Jacome as Deputy Jason

Inez Perez as Housekeeper

Roy Gaintner as Walker

Evans Thornton as Major White

I. Stanford Jolley as Dispatcher

Robert Gooden as Leslie

Walter Kelley as Truck Driver

Frank Kennedy as Doctor

Don Starr as Cutler

Peter O'Crotty as Arlen

Jerry Dunphy as Television Newscaster

Phillip Avenetti as Officer Lopez

Russell Morrell as Priest

Donna Gelgur as Wife in Car