Lucy Jarrett is at a crossroads in her life still haunted by her fathers unresolved death a decade earlier. She returns to her hometown in Upstate New York The Lake of Dreams and late one night she cracks the lock of a window seat and discovers a collection of objects. They appear to be idle curiosities but soon Lucy realizes that she has stumbled across a dark secret from her familys past one that will radically change her—and the future of her family—forever.