David Chatelle: 2 books

Three forest fire combatants find themselves on a world constructed about a tiny black hole. The inhabitants, four very different species, have become invaded by a fifth and, while trying to avert that catastrophe, they learn that they were brought to this world for a far greater purpose that may even affect their own.

Three firemen battling a forest blaze are mysteriously whisked to a strange land. Separated upon arrival, they meet and, through tough circumstances, befriend individuals of the four distinctly different aboriginal species. This new land is invaded by cruel and monstrous creatures from beyond a barrier...