Pinion, Minnesota: a metropolis of all of 700 souls. Nothing ever happened there - until the mayor of sorts (campaign slogan: "I'll Do What I Can") and a buddy come up with a scheme to put Pinion on the map. They'd heard of a place where a floating image of the Virgin Mary had turned the whole town into a shrine, attracting thousands of pilgrims. And all those pilgrims needed food, shelter, all kinds of crazy things, right? They'd all get rich! What could go wrong? When the dead body shows up, they find out, and that's only the beginning of their troubles - and Virgil Flowers'....

In Southeast Minnesota, down on the Mississippi, a school board meeting is coming to an end. The board chairman announces that the rest of the meeting will be closed, due to personnel issues. "Issues" is correct. The proposal up for a vote before them is whether to authorize the killing of a local reporter. The vote is four to one in favor.

In Israel, a man clutching a backpack searches desperately for a boat. In Minnesota, Virgil Flowers gets a message from Lucas Davenport: You're about to get a visitor. It's an Israeli cop, and she's tailing a man who's smuggled out an extraordinary relic - a copper scroll revealing startling details about the man known as King Solomon. Wait a minute, laughs Virgil. Is this one of those Da Vinci Code deals? The secret scroll, the blockbuster revelation, the teams of murderous bad guys? Should I be boning up on my Bible verses? He looks at the cop. She's not laughing.

Virgil knows the town of Trippton, Minnesota, a little too well. A few years back, he investigated the corrupt - and, as it turned out, homicidal - local school board, and now the town's back in view with more alarming news: A woman's been found dead, frozen in a block of ice. There's a possibility that it might be connected to a high school class of 20 years ago that has a midwinter reunion coming up, and so, wrapping his coat a little tighter, Virgil begins to dig into 20 years' worth of traumas, feuds, and bad blood.

Bonnie and Clyde, they thought. And what's-his-name, the sidekick. Three teenagers with dead-end lives, and chips on their shoulders, and guns. The first person they killed was a highway patrolman. The second was a woman during a robbery. Then, hell, why not keep on going? As their crime spree cuts a swath through rural Minnesota, some of it captured on the killers' cell phones and sent to a local television station, Bureau of Criminal Apprehension investigator Virgil Flowers joins the growing army of cops trying to run them down.

At the local state university, two feuding departments have faced off on the battleground of science and medicine. Each carries their views to extremes that may seem absurd, but highly educated people of sound mind and good intentions can reasonably disagree, right? Then a renowned and confrontational scholar winds up dead, and Virgil Flowers is brought in to investigate...and as he probes the recent ideological unrest, he soon comes to realize he's dealing with people who, on this one particular issue, are functionally crazy. 

One late fall Sunday in southern Minnesota, a farmer brings a load of soybeans to a local grain elevator - and a young man hits him on the head with a steel bar, drops him into the grain bin, waits until he's sure he's dead, and then calls the sheriff to report the "accident." Suspicious, the sheriff calls in Virgil Flowers, who quickly breaks the kid down...and the next day the boy's found hanging in his cell. Remorse? Virgil isn't so sure....

Lucas Davenport had crossed paths with her before. A rich psychopath, Taryn Grant had run successfully for the US Senate, where Lucas had predicted she'd fit right in. He was also convinced that she'd been responsible for three murders, though he'd never been able to prove it. Once a psychopath had gotten that kind of rush, though, he or she often needed another fix, so he figured he might be seeing her again. He was right.

Flowers is only in his late 30's, but he's been around the block a few times, and he doesn't think much can surprise him anymore. He's wrong. It's a hot, humid summer night in Minnesota, and Flowers is in bed with one of his ex-wives (the second one , if you're keeping count ) when the phone rings. It's Lucas Davenport. There's a body in Stillwater, two shots to the head, found near a veterans' memorial. And the victim has a lemon in his mouth.

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.

Clayton Deese looks like a small-time criminal, muscle for hire when his loan shark boss needs to teach someone a lesson. Now, seven months after a job that went south and landed him in jail, Deese has skipped out on bail, and the US Marshals come looking for him. They don't much care about a low-level guy - it's his boss they want - but Deese might be their best chance to bring down the whole operation. Then, they step onto a dirt trail behind Deese's rural Louisiana cabin and find a jungle full of graves.

A few years back, Virgil investigated the corrupt - and, as it turned out, homicidal - local school board in Trippton, Minnesota. Now the town's back in view with more alarming news: a woman's been found frozen in ice. There's a possibility that it might be connected to a high school class of 20 years ago, and so Virgil begins to dig into 20 years' worth of bad blood.

A drug-cartel counting house gets robbed in Biloxi, Mississippi, and suitcases full of cash disappear, leaving behind five bodies, including that of a six-year-old girl. Davenport takes the case, which quickly spirals out of control, as cartel assassins compete with Davenport to find the Dixie Hicks shooters who knocked over the counting house. Things get ugly real fast, and neither the cartel killers nor the holdup men give a damn about whose lives Davenport might have saved; to them, he's just another large target.

The "Big Three" are a trio of inmates locked up in the Minnesota Security Hospital over the years, each a particularly vicious serial killer, each with his own distinct style and propensities. Everybody feels much safer knowing that they're behind bars. Except...there's a new killer on the loose. And his handiwork bears a disturbing resemblance to some of the finer points practiced by the Big Three, details that never even made the papers.

The daughter of a US Senator is monitoring her social media presence when she finds a picture of herself on a strange blog. And there are other pictures...of the children of other influential Washington politicians, walking or standing outside their schools, each identified by name. Surrounding the photos are texts of vicious political rants from a motley variety of radical groups. It's obviously alarming - is there an unstable extremist tracking the loved ones of powerful politicians with deadly intent? But when the FBI is called in, there isn't much the feds can do.