A lost gold mine, a corpse in an abandoned pickup truck, and an eerie wailing heard on Halloween are among the delicious plot elements Tony Hillerman cooks up in his 15th novel featuring Joe Leaphorn and Jim Chee. The two Navajo cops, one old and one young--who originally debuted in separate series but have been collaborating for many books now--are among the most engaging, fully human characters in crime fiction. As usual, Hillerman puts them to work in a suspenseful, satisfying tale that integrates a wealth of Navajo lore plus breathtaking evocations of the American Southwest, all delivered in prose as clear, clean, and easy-flowing as a mountain stream. Longtime readers will be delighted by several developments, including a prominent role for the appealing Officer Bernadette Manuelito and a glimpse at the phlegmatic Leaphorn's testy side. But Hillerman welcomes new arrivals as well, with enough exposition to get you oriented.