By Donald Rumbelow. Introduction by Colin Wilson. Rumbelow is retired London police and a crime historian, specifically a Whitechapel-murders expert. This paperback promises "new evidence -- plus postmortem photos of the Ripper's victims." Not sure about the former; can confirm the latter.
Can also confirm the PB is in okay, not great, shape: some edgewear and page toning/foxing; cracked spine with a mild lean; previous owner info on the inside cover. Good enough reading/research copy.