1. Bölüm

William Hartnell

The Doctor

Patrick Troughton

The Doctor

Nicholas Courtney

The Brigadier

John Levene

Sergeant Benton

Rex Robinson

Dr. Tyler

Roy Purcell

President of the Council

Clyde Pollitt

Chancellor

Graham Leaman

Time Lord

Patricia Prior

Mrs. Ollis

Denys Palmer

Corporal Palmer

John Scott Martin

Cell Guard (uncredited)

Laurie Webb

Mr. Ollis