"Tom Walker, a Sherlockian and member of the Baker Street Irregulars, has done his literary hero proud." -Vincent Patrick, New York-based novelist and screenwriter, author of The Pope of Greenwich Village "As with Da Vinci, to crack a complex criminal code involves a beacon of brilliance and an uncanny imagination-this author has an abundance of both." -Ret. Lt. Philip J. Romano, NYPD "In this...