When the Master steals the Time Lords' secret file on the Doomsday Weapon, they grant the Doctor a temporary reprieve from his exile on Earth to deal with the crisis. He and Jo arrive on the planet Uxarieus and become enmeshed in a struggle between an agrarian colony and a powerful mining corporation.

Genres

Cast

Jon Pertwee

The Doctor

Katy Manning

Jo Grant

Nicholas Courtney

Brigadier Lethbridge-Stewart

Roger Delgado

The Master

David Webb

Leeson

Roy Skelton

Norton

Helen Worth

Mary Ashe

Pat Gorman

Primitive / Voice / Long / Colonist

Peter Forbes-Robertson

Time Lord

Bernard Kay

Caldwell

Morris Perry

Captain Dent

Tony Caunter

Morgan