They didn’t know, perhaps, that Sherlock Holmes was based on a real man, Dr. Joseph Bell, and that the methods Arthur Conan Doyle created for his fictional detective inspired generations of real-world detectives. Did they know that Arthur Conan Doyle went on to investigate mysteries in his real life and even absolved a man of a crime for which he had been convicted? Did they know how Agatha Christie brilliantly staged her own disappearance in order to exact an elegant revenge on a cheating husband?

