By Donald Rumbelow. Introduction by Colin Wilson. Rumbelow is retired London police and a crime historian, specifically a Whitechapel-murders expert. I believe this hardcover is functionally the same as JTR: The Complete Casebook, but can’t swear to that in terms of the contents.
The hardcover's in okay shape for a 1975 publication: the jacket is visibly worn and has a BIG bite out of the front, but what remains is protected by a wrap. Some writing on flyleaf, in pencil; mild toning to deckle-edge pages. Clean and un-dog-eared within, though; a decent vintage version of this genre classic.