The summer of 1995 marks Kate Colter's fifteenth year in the small town of Hayden, Wyoming. A New Englander at heart, Kate loves her husband and daughter and is fond of her neighbors. Yet, privately, she feels disconnected from the people around her. Then along comes Tom Baxter. Her mother-in-law's new suitor from "back East," Tom immediately draws Kate in with his gentle charm and engaging conversation, like a little piece of the home she so misses. But inconsistencies in his stories are piquing Kate's curiosity—and a series of peculiar and suspicious events is leading her to a terrifying conclusion that could forever shatter her life and the lives of those she loves.