A priest hole was a room built in English Catholic homes during the late 16th century while Catholics were being legally persecuted.
The Doctor's house in London, 107 Baker Street, had a priest hole hidden behind the mirror in the attic bedroom. (AUDIO: The White Room)
Harney Hall had a priest hole. (AUDIO: The Devil's Armada)
When Roundheads and Royalists attacked each other in the village of Little Hodcombe in 1643, Will Chandler took refuge from the violence in a priest hole. (TV: The Awakening)
The priory owned by Marcus Scarman had a priest hole which Scarman and his brother Laurence had discovered when they were children. Laurence, the Fourth Doctor and Sarah Jane Smith later used it to hide from three Osiran service robots. (TV: Pyramids of Mars)
Clyde Langer and Luke Smith escape from the nuns at St Agnes Abbey using the priest hole tunnels. (PROSE: Eye of the Gorgon)