Tom Mason

Dr. Scott Dryden

Eric Braeden

Leonard Nero

Melinda O. Fee

Gwendolyn O'Brien

Fawne Harriman

Joyce Cummings

Matthew Labyorteaux

Timmy Garner

Ron Masak

Harve Nelson

Caroline McWilliams

Sue Garner

John Milford

Eldon Gates

Max Gail

Russ Garner

Ed Harris

Chuck Polcheck

Hank Brandt

Lt. Col. John Sebastian

Laurence Haddon

Bert Fowler

Gerald McRaney

Patrolman Ashley

Curtis Credel

Frank Foley

Richard Lockmiller

Patrolman Strong

Sean G. Griffin

Dr. Conley

Christopher L. O'Brien

Technician

Tom Lowell

Intern

Nancy Priddy

Teacher

Lorna Thayer

Waitress

John Gilgreen

Floyd

Laurie Beach

Girl Student

Dirk Olthof

Waiter

Tom Pittman

Security Guard

Peter Schuck

Orderly

William Kerwin

Professor Reeve (uncredited)