I read a C.J. Box book a couple of months ago after hearing him interviewed on WAMC. I like it a lot, Badlands, and I picked this one up at a library book sale recently. The other book is not part of the Joe Pickett series. This is the first one the series that I have read, it is the seventh one, out of 16 now, and I'll be reading more. Although there were references in the book to past events that must have been the subject of previous entries in the series, I did not feel like I was missing anything by reading this book first, and the book was fully understandable despite not knowing the history of the characters. Joe has been fired from his position as a State Game Warden, and is working as a foreman for a ranch, when the Governor offers to reinstate him if he agrees to investigate some murders that occurred in Yellowstone National Park. A lawyer had killed four employees of a franchise that operates the Park's hotels. One of the victims had sent an email to the Governor that implied that the State's revenues were in jeopardy. The lawyer got away with the murders because they occurred in a part of the park within the boundaries of Idaho, and due to a legal loophole, no criminal proceeding would be brought against him. Joe's investigation pits him against the Park Service and the FBI, who resent his interference with their operations and second-guessing of the investigation that they conducted. And as he gets closer to the truth, more people start getting killed, and Joe and his family are in jeopardy. This is high quality crime fiction. I was entranced and wanted to keep reading the book once the plot took off, after Joe gets to Yellowstone.