By Joseph Wambaugh. Ex-cop and "master storyteller" Wambaugh takes his mastery to the UK for this case. This isn't the direction I'd have gone in with the cover art, tbh (or some of the blurbs...a Brigadoon reference for a book about the rape and murder of two teenagers? idk).
But this NYT bestseller by the author of The Onion Field is priced to move (and then be recycled) -- edgewear, a creased and leaning spine, page toning, and a deliciously slender price tag.