4 stars. IC. J. Box is one of my favourite authors and I love his Joe Pickett series. This book was #19 in the series and was a good read. Wyoming Game Warden Joe has his job back and he and his family have moved into a new home. A drone is harassing and killing wildlife and Joe discovers that the drone belongs to a mysterious man who appears to be above the law. This man's son is dating Joe's daughter, which makes it problematic. Joe teams up with another Game Warden, Katelyn Hamm, to try to enforce the law on this man, but soon the FBI is involved and their team appears willing to do whatever they need to do to stop Katelyn and Joe. And then people start dying in their territory and a team of Sinaloan assassins nicknamed The Wolf Pack appears to be responsible. Joe calls on Nate and they soon find themselves in the gunsights of the cartel hit team. A very good read.