A wealthy doctor invites many of his associates to spend a week at a giant, luxurious ski villa. Darby Piper, a seasoned private eye, and Tate Porter, her new partner at the detective agency, are among the guests, going undercover as a romantic couple. They were hired by the doctor's much-younger wife to investigate anonymous threats against her husband's life. But before long, Darby and Tate are investigating a murder instead. As they dig up buried grudges, Darby's jealous ex-boyfriend on the police force thinks they're wasting their time. Will Darby and Tate figure out who the killer is ... or will it become another cold case?