Minneapolis TV research assistant, Gina Adams, devotes her life to recognizing patterns and anomalies and providing feedback on that. When she spots a woman clad in vintage garb that's out of the ordinary for a Minnesota winter, her curiosity is piqued. What she soon discovers, however, upends the experienced researcher's life.
Detectives Vilnas and Renford pride themselves on their investigative skills. That's why they're the perfect candidates for an FBI task force assigned to root out and apprehend an elusive serial killer who has gone to great lengths to cover their tracks.
When the detectives stop by headquarters for an impromptu holiday visit, a simple favor for a colleague opens a Pandora's box of strange coincidences and their connection to a troubled young woman and her psychiatrist—the psychiatrist who also is a member of the task force.
As seemingly unconnected events come to light, the detectives' investigation leads them in a new direction, where they'll need more than analytical skills to solve the case and bring the vicious serial killer to justice.