Paperback. 2nd impression (1st pub. 1987). Who was Jack the Ripper, brutal killer of 5 East End prostitutes in 1888? Why did the spate of deaths suddenly stop, although no arrest was made? Why did the police records confuse 2 different Polish Jews committed to Colney Hatch asylum around the same time? New, at the time, source material - including private notes and office memoranda belonging to Chief Inspector Swanson, as well as his own solution - suggests a brand new identity for the legendary murderer. With Sources. 238pp. Nr. F. with no creasing to covers.