Lloyd Bridges as Al Mitchell

Raymond Burr as Estes Hill

Robert Fuller as Matt Leigh

Pat Hingle as John Marsh

E.G. Marshall as Roy Snyder

Yvette Mimieux as Paula Harvey

William Shatner as Stuart Peters

Paul L. Smith as Jim Waterman / Victor Prescott

Arthur Malet as Southbound Conductor

Harry Caesar as Northbound Conductor

Jacque Lynn Colton as Mrs. Shanks

Lane Smith as John Carlson

Sandy McPeak as Hennessey

Virginia Kiser as

Rockne Tarkington as

Michael Pataki as Tate

Peter Jason as LeBoux

Peter MacLean as

Jerry Ayres as Talmadge

Julie Mannix as Debbie Fox

Steve Jerro as Al

Ron Prince as Detective

Dago Dimster as David

Carole Hemingway as Newscaster

Carl Gordon as Foreman

Eric Poppick as Computer Expert

Jason Ronard as Ellis

Herbert Bress as Bartender

Tony Matranga as Policeman

Norman Alexander Gibbs as Steward

James W. Gavin as Helicopter Pilot

Ross Reynolds as

Ross Reynolds as Helicopter Pilot