Grant Williams as Dave Miller

Lola Albright as Cathy Barrett

Les Tremayne as Martin Cochrane

Trevor Bardette as Prof. Arthur Flanders

William Flaherty as Police Chief Dan Corey

Harry Jackson as Dr. Steve Hendricks

Richard H. Cutting as Dr. E.J. Reynolds

Linda Scheley as Ginny Simpson

Dean Cromer as Highway Patrolman

Steve Darrell as Joe Higgins

Paul Petersen as Bobby

William Schallert as Weatherman

Phil Harvey as Ben Gilbert

Troy Donahue as Hank Jackson

Carol Morris as Nurse 1

Claudia Bryar as Mrs. Simpson

Ezelle Poule as Ethel