The "maddog" murderer who is terrorizing the Twin Cities is two things: insane and extremely intelligent. He kills for the pleasure of it and thoroughly enjoys placing elaborate obstacles to keep police befuddled. Each clever move he makes is another point of pride. But when the brilliant Lieutenant Lucas Davenport, a dedicated cop and a serial killer's worst nightmare, is brought in to take up the investigation, the maddog suddenly has an adversary worthy of his genius.

By age twenty-four, Letty Davenport has seen more action and uncovered more secrets than many law enforcement professionals. Now a recent Stanford grad with a master’s in economics, she’s restless and bored in a desk job for U.S. Senator Colles. Letty’s ready to quit, but her skills have impressed Colles, and he offers her a carrot: feet-on-the-ground investigative work, in conjunction with the Department of Homeland Security.

Revenge is the engine that powers this entry in John Sandford's Prey series, starring superslick Minnesota cop Lucas Davenport. When a dangerous female bank robber is killed in a shootout, her even more dangerous husband escapes from prison and begins a campaign of retribution against the families of Davenport and his team.

Virgil Flowers kicked around for a while before joining the Minnesota Bureau of Criminal Apprehension. First it was the army and the military police, then the police in St. Paul, and finally Lucas Davenport brought him into the BCA, promising him, "We'll only give you the hard stuff." He's been doing the hard stuff for three years now, but never anything like this.

Every day without fail, Travis Devine puts on a cheap suit, grabs his faux-leather briefcase, and boards the 6:20 commuter train to Manhattan, where he works as an entry-level analyst at the city’s most prestigious investment firm. In the mornings, he gazes out the train window at the lavish homes of the uberwealthy, dreaming about joining their ranks. In the evenings, he listens to the fiscal news on his phone, already preparing for the next grueling day in the cutthroat realm of finance. Then one morning Devine’s tedious routine is shattered by an anonymous email: She is dead.