"Moon" Mathias, midwestern journalist, receives a phone call that his brother has died in Viet Nam and left a business, a wife, and a daughter. Moon doesn't really want to leave his comfort zone with the paper to try and get them out. After all, Viet Nam's a mess--the war's winding down to a looming defeat. All of Southeast Asia's unstable. Unfortunately, others have higher regard for Moon's abilities than he does. In a short time he's drawn into an adventure with new, different friends, and a new Moon. This is one of Hillerman's rare jaunts out of his comfort zone on the reservation in New Mexico. It's a refreshing change of pace. His recent adventures of Sgt. Chee and Lt. Leaphorn have been losing the excitement and sense of locale that attracted me in "A Thief of Time." When a writer like Hillerman (or P. Cornwall, recently) recognizes the need for a change of direction in their work, and takes a detour, I'm ready to go along with them. "Finding Moon" was a fun diversion from Hillerman's formula. Is it a plausible story? Not very; but this is a novel, not an oeuvre. If I want the facts, there's always the newspaper.