1968 Olympics

The 1968 Olympic Games were held in Mexico City. Señor 105 and Iris Wildthyme stopped an army of spirits led by Axixmiqui from draining the life force of everyone attending the Olympics' opening ceremony. Iris bought a souvenir bracelet afterwards, which read "Mexico Olympiad". She assured Panda that "I never lose jewellery!", and swore she was going to wear it "everywhere". (PROSE: Iris Wildthyme y Señor Cientocinco contra Los Monstruos del Fiesta)

While in Atlantis, Polly Wright discovered a souvenir bracelet from the games, which she showed to the Second Doctor to prove they had arrived around 1970. Polly pointed out that when she and Ben Jackson had left Earth in 1966, the Olympics hadn't happened yet; Ben Jackson knew the event wasn't due until 1968. (TV: The Underwater Menace)

Behind the scenes

 * To allow for the BBC's televised coverage of the 1968 Olympic Games, there was a two-week break during Season 6 between The Mind Robber episode five and The Invasion episode one.