Paleontologist Richard Leyster has achieved professional nirvana: a position with the Smithsonian Museum plus a groundbreaking dinosaur fossil site he can research, publish on, and learn from for years to come. There is nothing that could lure him away -- until a disturbingly secretive stranger named Griffin enters Leyster's office with an ice cooler and a job offer. In the cooler is the head of a freshly killed Stegosaurus.Griffin has been entrusted...