Title: Magnum fault
Description: Jill and Cody solve a mystery that begins with the disappearance of Jill's father, a geologist for a gas company, after he has made a frightening discovery, and the sudden drying-up of Cody's favorite canoeing river.
Subjects: Mystery and detective stories, Gas industry, Fiction, Western stories, Children's fiction, Adventure and adventurers, fiction, Juvenile fiction
Places: West (U.S.)