内容简介：
Fly a hairy helicopter rescue mission through the snowlogged mountains of Jackson Hole-at night-with one of the world's "scruffiest" movie stars as your pilot! In this fast-paced thriller, the world's worst outbreak of forest fires forces animals and humans alike to flee Yellowstone National Park. When thousands of recovering elk soon undertake their annual migration southward to the National Elk Refuge at Jackson, Wyoming, they are followed by four hungry grizzlies. At first feared, the big bruins unexpectedly turn around the area's sagged tourism economy when they become nationally famous. But then all of the grizzlies mysteriously disappear-along with a local newspaper photographer and a couple of skiers. Who will be next? Can the bears be stopped? Is anyone in charge? And who will wax the floors when Mayor Elvis leaves the building?