It’s elk season in the Rockies, but this year one hunter is stalking a different kind of prey. When the call comes in on the radio, Joe Pickett can hardly believe his ears: game wardens have found a hunter dead at a camp in the mountains - strung up, gutted, skinned, and beheaded, as if he were the elk he’d been pursuing. Governor Rulon is forced to end hunting season early for the first time in state history - outraging hunters and potentially crippling the state’s income from the loss of hunting license revenue.

It’s an idyllic late-summer day in Saddlestring, Wyoming, and game warden Joe Pickett is fly-fishing with his two daughters when he stumbles upon the mutilated body of a moose. Whatever or whoever attacked the animal was ruthless: half the animal’s face has been sliced away, the skin peeled back from the flesh. Shaken by the sight, Joe starts to investigate what he hopes is an isolated incident.

'Tell Sherry April called.' That simple phone message shakes Joe Pickett’s oldest daughter Sheridan and the rest of the family to the core. To Joe, it doesn’t seem even remotely possible that April could have survived the massacre six years before. He was there, and he was unable to save her. But Sheridan starts to believe there’s a chance that April is still alive, and her suspicions are confirmed when the person sending texts to her cell phone is able to recall family incidents only April could know.

Joe Pickett’s in his last week as the temporary game warden in the isolated town of Baggs, Wyoming, but there have been strange things going on in the surrounding mountains, and his conscience won’t let him leave without checking them out: reports of camps looted, tents slashed, elk butchered. And then there’s the runner who’s gone missing – an Olympic hopeful who’d been training in the region and then just ... vanished.

Joe has good reason to dislike Dallas Cates - his eighteen-year-old foster daughter, April, has run off with him. And then comes worse news: the body of a girl has been found in a ditch along the highway – barely alive, the victim of blunt force trauma. It is April, and the doctors don't know if she'll recover. Cates denies having anything to do with it - but Joe knows in his gut who's responsible.

The good news is that Joe Pickett has his job back. The bad news is that Wyoming's Twelve Sleep County game warden is only days away from the most dangerous predators he's ever faced. Joe's working with Katelyn Hamm, his counterpart in adjacent Shell County, to trace a drone operator whose aerial acrobatics have been stampeding elk and deer to their deaths. Their investigation will put them both on a collision course not only with the FBI but also with the Wolf Pack, a remorseless quartet of killers.

Joe Pickett's old friend, Nate Romanowski, is off the grid, lying low while the FBI search for him. But they're not the only ones looking for him. Nate finds himself confronted by agents who need his help assessing a potential terror threat in Wyoming's Red Desert. In return they'll make Nate's criminal record disappear. Meanwhile, Joe investigates a rash of crimes and secretive federal activity. As they pursue their quarries, both men will be drawn deep into a secret that could take them both down.

In 1995, Nate was in a secret Special Forces unit abroad when a colleague did something terrible. Now high up in the government, the man is determined to eliminate anyone who knows about it, and Nate knows exactly how he'll do it – by striking at Nate's friends to draw him out. The entire Pickett family will be a target, and the only way to fight back is outside the law. Nate knows he can do it, but he isn't sure about his straight-arrow friend – and all their lives could depend on it.

The plane circled in the dark. Down below, Joe Pickett could just make out figures in the snow and timber. Joe knew that he might be their next target. The Cates clan's history with the Picketts is about to come full circle. Game warden Joe Pickett struck a fierce blow against them when the life of his daughter April was endangered. But it wasn't a killing blow, and he'd always wondered if there'd be a day of reckoning...It seems now Joe will find out.

Cody Hoyt, while a brilliant cop, is an alcoholic struggling with two months of sobriety when his mentor and AA sponsor Hank Winters is found burned to death in a remote mountain cabin. At first it looks like the suicide of a man who’s fallen off the wagon, but Cody knows Hank better than that....

When Earl Alden is found dead, dangling from a wind turbine, it's his wife, Missy, who is arrested. Unfortunately for Joe Pickett, Missy is his mother-in-law, a woman he dislikes heartily, and now he doesn't know what to do - especially when the early signs point to her being guilty as sin. But then things happen to make Joe wonder: Is Earl's death what it appears to be? Is Missy being set up?

The wife of a prominent local judge is shot and killed on Wyoming game warden Joe Pickett's turf. But as Joe investigates, all signs point to the shot having been taken from an impossibly long distance. Joe has seen a lot in his time as warden, but he's never seen a killing like this. At the same time, just as he's adjusting to the arrival of a new baby, Joe's best friend Nate Romanowski is attempting to decipher a startling grizzly attack in the area. Beset by threats both man-made and natural, the two men must go to great lengths to figure out how to keep their loved ones safe.

Wyoming's new governor isn't sure what to make of Joe Pickett, but he has a job for him that is extremely delicate. A prominent female British executive never came home from the high-end guest ranch she was visiting, and the British embassy is pressing hard. At the same time, his friend Nate Romanowski has asked Joe to intervene with the feds on behalf of falconers who can no longer hunt with eagles even though their permits are in order. But the more he investigates both cases, the more someone wants him to go away.

In 'Shots Fired', Joe Pickett's investigation into a radio call threatens to become his last. In 'Pirates of Yellowstone', two Eastern Europeans find out just how ruthless American tough guys can be. In 'Le Sauvage Noble', a Lakota Indian takes a job at Disneyland Paris. These gripping tales are proof, once again, of why Box is a force to be reckoned with.

With his rivals far ahead of him, Jack must now get to one of the five iron mountains - two of which have never been found - and perform a mysterious feat known only as 'The Fall'. Although what is this object on the moon that is connected to it?