Lucy Jarrett is at a crossroads in her life, still haunted by her father’s 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 family’s past, one that will radically change her—and the future of her family—forever.