Jack the Ripper's Black Magic Rituals
Ivor Edwards
Penny Publishing, 2001. 172pp., illustrated.
ISBN: 0954147405
Casebook Review: 
This book purports to explain the motive, planning and execution of the
Ripper murders as part of a mystical "black magic"
ritual performed by none other than Roslyn Donston.
Edwards' theory is that the murders were planned on a map
according to an ancient geometric symbol called Vesica Pisces.
Although he provides a lot of information concerning the symbol and its use
throughout history, the attempt to connect
it to the Ripper murders does not fully convince. Enthusiasts with an
interest in black magic and
the occult may be interested in this book, though casual Ripper readers
may just find it confusing.