From publisher blurb:
Terrible monsters creep in the shadows, all over the world. Some, driven by very particular needs, have a clear modus operandi that allows those with knowledge to identify them by the aftermath of their deeds. Others are less readily identifiable—and some are not monsters at all, or not completely. Events beyond control, and motives no one would condemn, have led some to cross the line that separates monsters from the rest of us.
A seemingly straightforward investigation leads to a horrifying conclusion as the player characters discover that their quarry is not what they first thought. Uncovering a tragedy instead of a predator, how will they react to a foe who—but for some bad luck—could have been any one of them? While it is certainly true that evil begets evil, it is also true that when love drives us, good and evil become blurred, and even irrelevant.