According to the author Diane Madsen Sir Arthur Conan Doyle (creator of Sherlock Holmes) and his mentor Dr Joseph Bell correctly identified Jack the Ripper. Diane Madsen has released a new book detailing her beliefs: The Conan Doyle Notes: The Secret of Jack the Ripper.
Sir Arthur Conan Doyle was a clerk under Dr Joseph Bell at the Edinburgh Royal Infirmary during the late 1870s and credits the pioneering forensic scientist as a key inspiration for his literary detective and his renowned methods of deductive reasoning.
Scotland Yard used Dr Bell during the Jack the Ripper investigation - an investigation into the murders of five prostitutes in London's Whitechapel area in 1888.
Diane Madsen has been quoted as saying: "Bell said that he had a 'friend who liked puzzles', and they both investigated the files
"They researched everything and then they each wrote their suspect's name down on a piece of paper, put it in an envelope and exchanged envelopes – and they both identified the same suspect."
Ms Madsen insists Bell filed a report to Scotland Yard and also notes the murders stopped soon afterwards.
Ms Madsen says: "All of this fits in with there being some kind of a police conspiracy because the report was never publicised. It's no longer in the files, apparently, nobody has seen it, nobody has talked about it, yet he says he made a report."
Ms Madsen also believes it was the identity of their suspect which stopped Doyle and Bell from making their findings public. Ms Madsen believes they both suspected James K Stephen who was a tutor to Prince Albert Victor, son of the Prince of Wales.