Changes

The Manchester-based detective was also like Holmes regularly consulted by the police when he became a ‘consultant.’ Then, as was the case with the man who solved the Mystery of the Hounds of the Baskervilles, Caminada had a nemesis, who was a criminal mastermind. His enemy was not some egocentric Professor like Moriarty, but a young man who swore revenge on Caminada for arresting him.<ref>O'Neill, Joseph, Crime City: Manchester's Victorian Underworld, Milo Books, 2008), p 14, 89)</ref>

Sir Henry Duncan Littlejohn (1826-1914) was a Scottish medical doctor, a public health advocate, and a social reformer. Doyle knew him because Littlejohn taught him at medical school in Edinburgh. He was one of the earliest experts in the new forensic science, and like Holmes, he was regularly consulted by the police, especially in Scotland.