Gus Ivy was restless, so he thought he' "test" retirement by spending the winter in Arizona. Endless rounds of golf only served to prove that there had to be more to his self-imposed idle time. By happenstance, Gus discovers an obscure Sagebrush western owned by his barber, and is excited to add it to his collection. Unfortunately, the sixty-year old "Cavity Lake Gang" has drawn the attention of a band of cutthroats who will stop at nothing to get their hands on Gus's copy. Together with a mysterious woman from Montana, Gus and Cassidy set off on a quest that takes them to the Navajo Indian Nation in Northeast Arizona, and beyond. It's a chilling race against both a deadline and a bunch of ruthless killers -- a race to solve a puzzle embedded within the book; but the end game may prove to be too costly as multiple deaths and a kidnapping litter their trail.