Something is terribly wrong in the nation's oldest national park.Horrific deaths have occurred throughout Yellowstone and everyone believes that a monstrous grizzly bear is on a rampage. Scientific evidence suggests another terrifying conclusion. For Chief Ranger Glenn Merrill, putting an end to the mysterious deaths is more than just his job, it is a mission that will take him to the brink of death and shatter the foundation of his beliefs.Apparition Lake plunges Glenn, his full-blooded Shoshone friend Johnny Two Ravens, and Jennifer Davies, an aggressive young biologist, into a world of Indian mysticism where mankind and nature struggle for control of Mother Earth. Apparition Lake races through its supernatural tale of an environment that has and "had enough and " and the Native American spirit it uses to mete out its revenge.