A former Texas Ranger is recruited by a Houston police captain to assist a homicide detective in the search for an elusive serial killer who collects antique dolls.

Lauren Allen is an ex-cop working on corporate espionage for leading perfume designer Grace Lantel. When someone begins murdering women and leaving bottles of Lantel's new perfume, Desire, as a calling card, all clues point to competing perfume designer Gordon Lewis. Allen joins up with Nick Palermo to investigate.

Ex-fighter Raymundo forms an unlikely bond with a disgruntled man whose life and relationship with his daughter are unraveling. The men join forces to win a fight that could very well save Raymundo, his wife and their child.

As murders begin to surface around hotels and expos, suspicion around Vi begins to close in. With her past resurfacing and her behavior growing harder to read, one question lingers: What is she really hiding?