Doctor Who: Logopolis
movie

Released March 21, 1981
Overview
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.
Cast

Tom Baker
as
The Doctor

Matthew Waterhouse
as
Adric

Sarah Sutton
as
Nyssa

Janet Fielding
as
Tegan Jovanka

Anthony Ainley
as
The Master
- no image
Delore Whiteman
as
Aunt Vanessa

Tom Georgeson
as
Detective Inspector

John Fraser
as
The Monitor
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Christopher Hurst
as
Security Guard
- no image
Adrian Gibbs
as
The Watcher (uncredited)

Peter Davison
as
The Doctor

Peter Pratt
as
The Master (archive footage)
Crew
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Henry Barber
as
Lighting Director

Peter Grimwade
as
Director

Christopher H. Bidmead
as
Writer

Christopher H. Bidmead
as
Script Editor

John Nathan-Turner
as
Producer

Barry Letts
as
Executive Producer

Paddy Kingsland
as
Original Music Composer
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June Hudson
as
Costume Design
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Malcolm Thornton
as
Production Design
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Peter Hall
as
Camera Operator
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Paul Humfress
as
Editor
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Jim McAlister
as
Sound