Frank and Joe are sent to investigate the disappearance of several teenagers at a ranch for troubled youths in Nevada.

When Dink, Josh, and Ruth Rose visit a dude ranch in Montana, they find themselves with another mystery to solve, this one involving the theft of money from the ranch's safe and of a large gold nugget that Josh had found.

The Bodine ranch and resort in western Montana is a family business, an idyllic spot for vacationers. A little over thirty thousand acres and home to four generations, it's kept running by Bodine Longbow with the help of a large staff, including new hire Callen Skinner. There was another member of the family once: Bodine's aunt, Alice, who ran off before Bodine was born. She never returned, and the Longbows don't talk about her much. The younger ones,...