It was Allen, who had once declared himself to be the "master of his own skin," who specified in his will that a copy of the book was to be bound in his own skin and given to Fenno as a final gift to the man who was skilled enough to bring him down. The detective accepted it and, presumably wearing the thickest pair of gloves he could find, took it home to display on his mantle.
Next to the shrunken head, Satan's antlers and the rusty fishing reel of the dead.
As the years went on, the book was passed on from generation to generation with Allen's descendants supposedly using the flesh-book to spank and/or traumatize children. Perhaps wanting to save on money being paid to trauma counselors, one of the descendants finally donated the book to the Boston Library. Patrons and staff haven't heard any screams or noticed the book levitating and they describe its creepy cover as, "a slightly bumpy texture, like soft sandpaper."
"Inside is also the compacted remains of the cutest Walton child."