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.

• DirectorPeter Grimwade
• Release21 March 1981
• Genre
  Science Fiction / Adventure
• Duration1h 40m
• Budget?
• Revenue?
• Rate
  

  6.5
  4 reviews
• Productions

  BBC