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.

Travis Devine has become a pro at accomplishing any mission he's given. But this time it’s not his skills that send him to Seattle to aid the FBI in escorting orphaned, twelve-year-old Betsy Odom to a meeting with her uncle, who’s under federal investigation. Instead, he’s hoping to lay low and keep off the radar of an enemy–the girl on the train. But as Devine gets to know Betsy, questions begin to arise around the death of her parents.

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.