James Phelps

Peter Graves

Daniel Briggs

Steven Hill

Barney Collier

Greg Morris

Willie Armitage

Peter Lupus

Rollin Hand

Martin Landau

Man On Tape (voice)

Bob Johnson

Paris

Leonard Nimoy

Cinnamon Carter

Barbara Bain

Meredyth

Dina Merrill

Dr. Karl Turek

David Sheiner

Lisa Casey

Lynda Day George

Colonel Valentin Yetkoff

Alfred Ryder

Katherine

Brooke Bundy

Dana Lambert

Lesley Ann Warren

Lorkner

H.M. Wynant

Guest Star

Cicely Tyson

Guest Star

Jessica Walter

Guest Star

Antoinette Bower

Jailhouse Guard

Michael Stefani

Guest Star

Pernell Roberts

Deputy Premier Voss

Robert Ellenstein

Musha / Marko / Sperizzi

Sid Haig

Gen. Zagin

Harry Davis

King Ibn Borca / Colonel Scutari

Joseph Ruskin

Maj. Alud

Leonard Stone

Eric Stavak / Joseph Baresh

Albert Paulsen

Sheriff Brad Owens / Frank Bates / Mark Walters

Joe Maross

Jara

Percy Rodriguez

Guard #1 / Gate Guard

Alfred Shelly

Imre Rogosh / George Berlinger / Emil Skarbeck

Fritz Weaver

Colonel Leo Orlov

Larry Linville

Chief of Internal Security Manuel Ferrar

John Colicos