Jack the Ripper: The 21st Century Investigation: A Top Murder Squad Detective Finally Uncovers the Truth Hardcover – April 1, 2005 by Trevor Marriott 
 
There have been countless attempts to solve the brutal murders committed over 100 years ago by Jack the Ripper, but this most famous of British criminal cases finally benefits from a clear, professional eye to analyze the evidence with all the benefits of modern investigative techniques. Former murder squad detective Trevor Marriott considers a mystery that has enthralled millions. Casting aside the rumors, fantasies, and urban legends which have haunted this case for so long, he produces some startling results: while it has long been accepted that Jack the Ripper killed only five women, Marriot believes there were up to nine victims. Most astonishingly of all, a previously unconsidered suspect who also committed murders in America and Germany has been firmly put in the frame. All previous theories are refuted in what may possibly be the final word on the Ripper murders.
 
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