NATIONAL BEST-SELLING AUTHOR. A snow storm of epic proportions shuts down the town of Sheridan, Michigan. The weather is dangerous enough on its own, but it has loosed something even deadlier onto the town: a duo of sadistic killers. No one thought much about the storm. Not the National Weather Service and not the big-name meteorologists. Experienced local weatherman Wally Wellman thought there might be trouble, but even he couldn't predict...