When Jen, the most complete Tyrannosaurus rex skeleton ever found, surfaces in Sheriff Walt Longmires jurisdiction, it appears to be a windfall for the High Plains Dinosaur Museum--until Danny Lone Elk, the Cheyenne rancher on whose property the remains were discovered, turns up dead. A number of groups step forward to claim her, including Dannys family, the tribe, and the federal government. As Wyomings Acting Deputy Attorney and the FBI descend...

Presents facts about the life of the Tyrannosaurus rex dinosaur within the framework of a visit to a museum by a boy and his grandfather.