From the outside, Mill River looks like any sleepy little Vermont town where everyone knows everyone and people never need to lock their doors. There are newcomers for whom this appeals, from police officer Kyle Hansen and his daughter Rowen, who are starting over after heartache, to Claudia Simon, the schoolteacher who is determined to reinvent herself. But on closer inspection, there are those in Mill River--including a stealthy arsonist, a covetous nurse, and a pilfering priest--who have things they wish to hide. None more than the widow Mary McAllister, who for the past sixty years has secluded herself in her marble mansion overlooking the town. Most of the residents have never even seen the peculiar woman. Only the priest, Father O'Brien, knows the deep secrets that keep Mary isolated--and that, once revealed, will forever change the community.