Crosswind

When Winchell Sark is called out to investigate a biplane crash at the foot of Perch, the finest center of aviation in the Sawtooth Mountains, he doesn't think much of it. But there are dark powers at work--powers that have their eyes on Perch. Powers that mankind long thought consigned to the trash heap of mythology. "Cept they were wrong. It's up to Winch and his brother, Copernicus, a hotshot pilot, to save their people.