The case of Jack the Ripper and his savage serial killing and horrendous mutilation of five women in the East End of Victorian London is the greatest of all unsolved murder mysteries. For over 100 years the long line of candidates for the bloodstained laurels of Jack the Ripper has been paraded before us. Policemen and Ripperologists have tried in vain to put a name to the faceless silent killer.

Richard Whittington-Egan, one of the founding fathers of the search, published, in 1975, his Casebook on Jack the Ripper, now eagerly sought after but long out of print and virtually unobtainable (except at mammoth prices), in which he documented the history, the crimes, the investigations and the investigators. He also included some fundamentally new discoveries and points, such as the real story of the kidney in Mr Lusk's renal post-bag, wrongly said to be that of Catherine Eddowes (Ripper Victim No. 4).

The endless nightmare of Jack the Ripper has rolled on, unstoppable, and now Richard Whittington-Egan, in a completely revised and very considerably enlarged edition of the 1975 Casebook, has taken a new look, from a longer perspective, at the theories and the personages who advanced them, from the time of the murders right up to the present day.