A bizarre murder leaves two teenagers dead in a desert arroyo, their naked bodies side by side, face up under the New Mexican sun. Near them, etched in stone, is a symbol unlike any Native American marking. What does it signify? The puzzle is made to order for Mo Bowdre's quirky and capacious intelligence. But Bowdre, a wildlife sculptor and occasional sleuth, may be in over his head, as he becomes embroiled in a possible case of ritual killing-and a certain malice. . . .