This is book 3 of the "Joe Pickett" series.

This note contains spoilers for the book.

 

A couple of Pickett's fellow employees have been murdered, one pretty much in front of his eyes. Up on the higher ground, elk territory. And then a traveling group of remnants of all the famous shootouts with "sovereign citizens" shows up, and a couple of completely out-of-control FBI agents are pursuing them.

And there's a real winter storm, dropping several feet of snow.

And April's birth mother is back, and wants her daughter back (after abandoning her at the bank along with the keys to her foreclosed house, on her way out of town; the Pickett's are in the process of adopting April but it's going slowly).

Joe and his friend Nate go a bit outside the law themselves before they're done. There's a brief period where Joe and his wife Marybeth each think the other has killed the FBI supervisor. Neither is actually sad she is dead.

April is also dead at the end (along with her mother); the FBI sniper deliberately shoots the propane gas connection and causes a gas explosion in the trailer April (and the leader of the caravan) are in. The man the raid is allegedly staged to capture isn't there, Joe found him elsewhere, and got up to the raid site to tell them before the shooting started (radio silence prevented just telling them from town).