Over the Edge: A Mystery in Grand Canyon National Park

Wildlife veterinarian Olivia Landon has been asked to help find the source of the lead shotgun pellets that are poisoning the few remaining California condors in Grand Canyon National Park. After she announces a plan, Olivia receives a death threat on her laptop. The plot soon thickens to involve the Landon kids, Jack and Ashley, and the family's temporary ward—15-year-old Morgan Rogers, a rebellious self-proclaimed anarchist and computer buff. Tension mounts when the e-mail threat is almost carried out and Morgan is the only witness.