Ceremony of the Keys (London) after the Tower. The event is usually sold out at least 12 months in advance. Ceremony of the Keys (London) The Ceremony of the Keys is an ancient ritual, held every evening at the Tower of London, when the main gates are locked for the night. It is said to be the oldest military ceremony in the world, and is the best-known ceremonial tradition of the Tower. At exactly 9.53 pm, the Chief Yeoman Warder, dressed in Tudor watchcoat and bonnet, and carrying a candle lantern, leaves the Byward Tower and falls in with the Escort to the Keys, a
The Keys of Marinus Morphoton order Barbara's death, but Barbara escapes and hides in the city, where she makes contact with the slave girl Sabetha, who has been blamed for Barbara's awakening and sentenced to death. Barbara notices one of the keys around her neck. They escape and destroy the creatures, freeing the subjects of the city. Another slave, Altos, remembers that he was also sent by Arbitan, and he and Sabetha join the Doctor and his crew on their quest. While the Doctor continues to the City of Mellennius, the others search in a dangerous screaming jungle. After triggering a trap, Barbara is