Roni Loren's third book from her A Pleasure Principle series, "Off the Clock" is, like, really sexy. Perfect for those interested in true erotica, this book explores the contrast between studying sex and well, having it. Marin Rush is a researcher at a sex therapy institute with no, ahem, hands-on experience in the field, so her new colleague, Dr. Donovan West, takes matters into his own hands, so to speak. It is quite the page turner.