These days, Mill River, Vermont, is a hive of activity. Karen Cooper bids farewell to her husband, Nick, as he leaves for Saudi Arabia to work as a contractor. But when he goes missing, Karen turns to beloved nonagenarian Father O’Brien for counsel. Kyle Hansen and Claudia Simon blissfully prepare for their wedding—until a new acquaintance threatens their romance. Emily DiSanti, haunted by a tragedy that tore her world apart a decade ago, is renovating the old McAllister mansion, eager to restore its former beauty and to find peace in the intense workload. All these lives—and the lives of others in this small town—move forward, bump up against one another, and intertwine. And when a cache of letters is discovered, a powerful and unexpected secret comes to light— one rooted deeply in the childhood of the longtime priest who has touched the lives of everyone in Mill River.