Doctor Who: Logopolis

After an encounter with the Master, an airline stewardess named Tegan Jovanka becomes an unwitting stowaway aboard the TARDIS as it travels to the planet Logopolis. There, the Doctor discovers that the Master's interference with the Logopolitans' advanced mathematics has unleashed a wave of entropy which threatens to consume the entire universe.

Science Fiction Adventure Drama

Tom Baker

(The Doctor)

Matthew Waterhouse

(Adric)

Sarah Sutton

(Nyssa)

Janet Fielding

(Tegan Jovanka)

Anthony Ainley

(The Master)

Delore Whiteman

(Aunt Vanessa)

Tom Georgeson

(Detective Inspector)

John Fraser

(The Monitor)

Christopher Hurst

(Security Guard)

Adrian Gibbs

(The Watcher (uncredited))

Peter Davison

(The Doctor)

Peter Pratt

(The Master (archive footage))

Bruce Purchase

(The Captain (archive footage))

Michael Wisher

(Davros (archive footage))

Valentine Dyall

(The Black Guardian (archive footage))

Elisabeth Sladen

(Sarah Jane Smith (archive footage))

Ian Marter

(Harry Sullivan (archive footage))

Nicholas Courtney

(Brigadier Lethbridge-Stewart (archive footage))

Louise Jameson

(Leela (archive footage))

Mary Tamm

(Romana (I) (archive footage))

Lalla Ward

(Romana (II) (archive footage))