shoved them into a dark, dusty passage under the house in the high desert of New Mexico. They’d followed it to its end; a sheer cliff six hundred feet above the Rio Grande River. Automatic gunshots echoed off the canyon. Gale felt as if the narrow tunnel walls were closing in on them. A week ago she’d trashed her life as a successful writer for National Geographic by following Ripley Gaines, the world-renowned archaeologist, on a daring flight to protect an
