May Moore, 29, an average Midwestern woman and deputy sheriff, has always lived in the shadow of her older, brilliant FBI agent sister. Yet the sisters are united by the cold case of their missing younger sister—and when an eerily similar serial killer strikes in May’s quiet, Minnesota lakeside town, it is May’s turn to prove herself, to try to outshine her sister and the FBI, and, in this action-packed thriller, to outwit and hunt down a diabolical killer before he strikes again.

From #1 bestselling mystery and suspense author Blake Pierce comes a gripping new series: when a serial killer escapes from a mental hospital, the FBI creates an elite unit to target criminally-insane killers. FBI Special Agent Valerie Law, a rising star, is the perfect candidate—but for Valerie, this case may just hit too close to home.

A string of murders around a frozen lake on the American-Canadian border leads the FBI and Canada to create an elite unit to tackle cross-border killers. FBI BAU Special Agent Katie Winter, originally from the Upper Peninsula and accustomed to its harsh winters and rough terrain, is the perfect candidate—yet with the childhood disappearance of her sister still haunting her, it was the one place Katie had hoped never to return.