The Strange Case of Dr Jekyll and Mr Hyde
Is there any particular reason we're going with Doctor and Mister, when our only sources are audio? Surely in such a case, the original real-world spelling is preferred. In fact, the publisher's summary of AUDIO: Master uses the original (Dr and Mr) spelling.
Talk about it here.
The Strange Case of Doctor Jekyll and Mister Hyde was a novel by Robert Louis Stevenson, (AUDIO: Medicinal Purposes) released soon before the 1890s. (AUDIO: Stage Fright)
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)
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)