'Bareback' is a thriller, above all; it's also a detective mystery, a deep character study, and a fully-realised alternative reality. The heroine is a scarred veteran - at 28 - of a small group of despised civil servants, conscripted into the system because they are non-werewolves. These few are charged with keeping the world functioning during moon nights, when all the normal citizens turn into wolves and start destroying things. It becomes an eerily reversed examination of discrimination, as the characters we consider to be human are universally regarded by the others, and more interestingly by themselves, as lacking something, disabled and weak. And there's also a fine awareness of the powers of bureaucracy and 'public opinion', as the hapless werewolf hunters are routinely injured and killed by the wolves, but cannot themselves risk inflicting damage without offending the ruling majority - and yet even that polarity is disturbed by Whitfield, as it becomes apparent that the non-werewolves take their revenge in numerous ways, acting as a secret police force whose power is supreme, and corruptible, in the underground prison cells.
The premise is interesting enough, then; what drives the book along, however, is a brilliant combination of detective thriller with a genuinely literary level of character development and depth. The plot rattles along with gripping speed; and our involvement in the mind of the heroine is huge. Whitfield's dialogue is utterly convincing in its qualities of miscommunication, and her heroine's flaws and weaknesses are as apparent as her strengths.
Above all, whatever your genre preferences or prejudices, 'Bareback' is worth a try: it's an extremely entertaining novel, which demands to be read at a sitting, and stays in the mind for a long time afterwards.