London 1966 and the Doctor and Dodo, on a visit to the Post Office Tower, meet Professor Brett whose new computer WOTAN can actually think for itself and is soon to be networked with other computers around the world. However, WOTAN believes that humans are inferior to machines and should, therefore, be ruled by them. Exerting a hypnotic influence, WOTAN arranges for the construction of War Machines - heavily-armed, self-contained mobile computers - with which to take over the world. These prove more than a match for the Army, but the Doctor is able to capture one of them, which he then re-programs to destroy WOTAN. When the crisis is over, Dodo chooses to remain in London; Ben and Polly, however, inadvertently become the Doctor's new companions when they enter the TARDIS to return his lost key.
        s03e01 - Four Hundred Dawns (1)
          
        
      
    
        s03e02 - Trap of Steel (2)
          
        
      
    
        s03e03 - Air Lock (3)
          
        
      
    
        s03e04 - The Exploding Planet (4)
          
        
      
    
        s03e05 - Mission to the Unknown
          
        
      
    
        s03e06 - Temple of Secrets (1)
          
        
      
    
        s03e07 - Small Prophet, Quick Return (2)
          
        
      
    
        s03e08 - Death of a Spy (3)
          
        
      
    
        s03e09 - Horse of Destruction (4)
          
        
      
    
        s03e10 - The Nightmare Begins (1)
          
        
      
    
        s03e11 - Day of Armageddon (2)
          
        
      
    
        s03e12 - Devil's Planet (3)
          
        
      
    
        s03e13 - The Traitors (4)
          
        
      
    
        s03e14 - Counter Plot (5)
          
        
      
    
        s03e15 - Coronas of the Sun (6)
          
        
      
    
        s03e16 - The Feast of Steven (7)
          
        
      
    
        s03e17 - Volcano (8)
          
        
      
    
        s03e18 - Golden Death (9)
          
        
      
    
        s03e19 - Escape Switch (10)
          
        
      
    
        s03e20 - The Abandoned Planet (11)
          
        
      
    
        s03e21 - Destruction of Time (12)
          
        
      
    
        s03e22 - War of God (1)
          
        
      
    
        s03e23 - The Sea Beggar (2)
          
        
      
    
        s03e24 - Priest of Death (3)
          
        
      
    
        s03e25 - Bell of Doom (4)
          
        
      
    
        s03e26 - The Steel Sky (1)
          
        
      
    
        s03e27 - The Plague (2)
          
        
      
    
        s03e28 - The Return (3)
          
        
      
    
        s03e29 - The Bomb (4)
          
        
      
    
        s03e30 - The Celestial Toyroom (1)
          
        
      
    
        s03e31 - The Hall of Dolls (2)
          
        
      
    
        s03e32 - The Dancing Floor (3)
          
        
      
    
        s03e33 - The Final Test (4)
          
        
      
    
        s03e34 - A Holiday for the Doctor (1)
          
        
      
    
        s03e35 - Don't Shoot the Pianist (2)
          
        
      
    
        s03e36 - Johnny Ringo (3)
          
        
      
    
        s03e37 - The O.K. Corral (4)
          
        
      
    
        s03e38 - The Savages (1)
          
        
      
    
        s03e39 - The Savages (2)
          
        
      
    
        s03e40 - The Savages (3)
          
        
      
    
        s03e41 - The Savages (4)
          
        
      
    
        s03e42 - The War Machines (1)
          
        
      
    
        s03e43 - The War Machines (2)
          
        
      
    
        s03e44 - The War Machines (3)
          
        
      
    
        s03e45 - The War Machines (4)
          
        
      
    Doctor Who is the longest-running science fiction TV series in history, airing initially from 1963 to 1989. Doctor Who is about ideas. It pioneered sophisticated mixed-level storytelling. Its format was the key to its longevity: the Doctor, a mysterious traveller in space and time, travels in his ship, the TARDIS. The TARDIS can take him and his companions anywhere in time and space. Inevitably he finds evil at work wherever he goes...