Long ago I read a paperback book about these lodgers who were being stalked by this invisible, demonic force. The first chapter of the book describes a serene forest somewhere in New England. A deer wonders into either a pasture or a near a pond; it's winter, there's snow on the ground. The deer is being stalked by a bear. The bear attacks the deer and just before the bear delivers the deadly blow this invisible force snatches up the bear, rips the skin from it and drags it's dead carcass through the forest.

I remember these lodgers happened across this invisible demon's lair where there were literally hundreds of skeletal remains and rotted carcasses and they were so terrified they tried to leave but the thing followed them back to the lodge. I wish, wish I knew the name of this book. All I remember is that the cover is of a dark forest with sunlight barely peeking through, and that the title was one word that started with a "P". If anyone could help me with this I would so greatly appreciate it. You have no idea. Thank you!