At the time, Gough was married to Anneke Wills who would shortly join the Doctor as companion, Polly. Gough would also return to Doctor Who as the Time Lord, Chancellor Hedin, in Arc of Infinity.

The TARDIS arrives at Gatwick airport in 1966 where Polly witnesses a murder. When the Doctor alerts the authorities they find the body has vanished and Polly has been kidnapped.