Kathy Barrister’s life has never been better. Owner of a thriving massage school, she loves passing on her knowledge of a healing profession to others. Then the murder of one of her students reveals a darker world than Kathy knew existed. A serial killer using online advertising services like Craigslist is targeting prostitutes, and it appears Kathy’s student somehow became his latest victim.

But what if there were unsavory things about her student Kathy never knew?

Stunned by a number of revelations, Kathy enlists Detective Greg Beacon, a former boyfriend, to...