William Lundigan

Dr. Richard Donald Stanton

Herbert Marshall

Dr. Donald L. Stanton / Narrator

Richard Carlson

Dr. Jerry Lockwood

Martha Hyer

Dr. Jane Flynn

Dawn Addams

Susan Manners

Robert Karnes

Walter Gordon

Lawrence Dobkin

Dr. Delmar

George Eldredge

Dr. Paul Dryden

Dan Riss

Dr. Frank Werner

Michael Fox

Dr. Klinger

King Donovan

James O'Herli

Kem Dibbs

David Wells

James Best

Dr. Sidney K. Fuller