10. Bölüm

William Windom

Michael Tressider

Eduard Franz

Premier Thor Halvorsen

Michael Rennie

Vice Chancellor Pierre Alquist

Diana Hyland

Ellie Markham

Richard Eastham

Carl Vanders

John Mayo

Alien

Jay Lanin

Alquist's Aide

Lew Brown

Aide

Albert Carrier

Frenchman

Morgan Jones

Guard

Don Ross

Reporter

Hank Simms

Journalist

Troy Melton

Journalist

William Woodson

Narrator (voice) (uncredited)

Lee Farr

Paul Bradley

Summit Attendee (uncredited)