Every Breath You Take — M.K. Gilroy

A high-profile murder tied to an online dating service has the Chicago news media buzzing. Who better to go undercover in the world of personal profiles and promising matches than an ace detective who is single and as attractive as she is tough? Detective Kristen Conner can't figure out her own dating life, but she is about to get a crash course on finding true love - or at least a Friday night date - and become the object of a killer's affections.