content: This book was an excellent read. The authors bring to light some interesting facts heretofore not related to the public. The American lodger was never thoroughly probed in the press but apparently drew more attention from the Yard than they let on at the time. Discovery of the Littlechild letter helps fill in some long missing and important pieces of the puzzle. Including the information of several identical 'Ripper' killings in Jamaica and South America at a time Dr. T. was unaccounted for, but being eagerly sought by operatives from Scotland Yard. The authors build a very plausible case for Dr. Tumblety as 'Jack the Ripper' given their lead from Inspector Littlechild. I'm convinced.