In southwest Texas for some R&R, park ranger Anna Pigeon and her husband take a raft trip down the Rio Grande. When they discover a woman nearly drowned, Anna suspects attempted murder. She finds herself involved in intrigue that leads from the Mexican desert to the steps of the Governor's Mansion in Austin. 15th in the series. "Riveting series of gut-wrenching events... extraordinary [and] electrifying."—Booklist