The War Machines is the tenth and final serial of the third season of the British science fiction television series Doctor Who, which was first broadcast in 4 weekly parts from 25 June to 16 July 1966. The serial is set in 1960s London, shortly after construction of the Post Office Tower was completed. In the serial, the time traveller the First Doctor (William Hartnell) and sailor Ben Jackson (Michael Craze) work together to stop the self-thinking computer WOTAN (voiced by Gerald Taylor) from invading London with the deadly War Machines controlled by WOTAN. This serial marks the departure of Jackie Lane as Dodo Chaplet and also the first appearance of Michael Craze and Anneke Wills as new companions Ben and Polly. It is also the only known complete serial to feature Anneke Wills and Michael Craze, and the final complete serial from the William Hartnell era. Plot The TARDIS lands in London, near the Post Office Tower, where the First Doctor and Dodo meet Professor Brett, the creator of WOTAN (short for Will Operating Thought ANalogue). In four days' time, WOTAN will be linked to other major computers across the world to take them over, including those of the White House, Cape Kennedy and the Royal Navy. Dodo goes with Polly, Brett's secretary, to the Inferno nightclub, where they meet Ben Jackson, while the Doctor attends a Royal Scientific Club meeting about WOTAN, led by Sir Charles Summer. Before Brett can depart for the meeting, he is hypnotised by WOTAN. He then fetches Krimpton, an electronics colleague, and takes him to WOTAN, where he, too, is possessed by the computer. Major Green, the chief of security in the Tower, is also taken over, and sends WOTAN's control signals to Dodo at the nightclub via telephone. Using its hypnotic control, WOTAN enlists a workforce to construct twelve robotic War Machines around London. One of these machines is built in a warehouse in Covent Garden, close to the Inferno nightclub. The next day, the Doctor telephones Brett at the Post Office Tower, and is nearly possessed by WOTAN. Thinking the Doctor is now controlled, Dodo reveals that the War Machines are being constructed in strategic points in London. The Doctor breaks WOTAN's hypnotic control over her, and she is sent to stay with Sir Charles's wife in the country to recover. The Doctor sends Ben to investigate the area around the