Bertram Fletcher Robinson was a great friend of Arthur Conan Doyle and a prolific writer, who tragically died aged just thirty-six in 1907. His collaboration was crucial to the revival of Sherlock Holmes in ACD's best-known tale, ''The Hound of the Baskervilles''. This volume is described as a 'footnote' to that story and while there is much of value to Sherlock Holmes fans, I got little impression of BFR the man, despite the meticulously recorded details which the authors have painstakingly uncovered.