Six years ago, a shocking secret sent Agnes Pratt running in search of a new start. She found it in Penance, a rugged town of miners and lumberjacks in the Dakota Territory, where she became Miss Aggie, respected schoolteacher and confirmed old maid. But the past has a way of catching up with people. When childhood friend and former sweetheart James Harris accepts a position as the town doctor, Aggie's pleasantly predictable days suddenly become anything but. James wants to know why Agnes left behind the life they had dreamed of creating for themselves--but he is the one person who can never know. In the shadows of the Black Hills, can a healing light be shed on the past? Or will the secret Agnes can't seem to outrun destroy her chance at happiness?