The Strange Case of Dr Jekyll and Mr Hyde

The Strange Case of Dr Jekyll and Mr Hyde was a novel by Robert Louis Stevenson, (AUDIO: Medicinal Purposes) released soon before the 1890s. (AUDIO: Stage Fright)

When the Doctor, Nyssa, Tegan and the professor Hayter found a sarcophagus with a being that has a split personality, the Doctor made a reference to Jekyll and Hyde. (TV: Time-Flight)

In 1828, Doctor Robert Knox alluded to the novel during a conversation with Evelyn Smythe. Given that Stevenson would not be born until the 1850s, the Sixth Doctor realised that he mentioned the novel as a test for Evelyn whom he correctly believed may be another time traveller. (AUDIO: Medicinal Purposes)

Henry Gordon Jago and George Litefoot were familiar with the book in the 1890s, and suggested that it needed a theatre revival. (AUDIO: Stage Fright)

In 1936, Charley Pollard described the Slaverings as a "cross between a silver-backed gorilla and Mr. Hyde". (AUDIO: The Shadow at the Edge of the World)

The character of Mr Hyde existed in the Land of Fiction, as one of the members of the Sisyphean Society's senior circle. (COMIC: Character Assassin)