In the fog-shrouded coastal town of Greywater, Amos has kept the lighthouse for forty years without ever aging a day. The townsfolk whisper about him but never dare ask. When fifteen-year-old Clara washes ashore after a storm, clutching a photograph of Amos taken in 1893, the keeper's carefully guarded secret begins to unravel. Amos is bound to the lighthouse by an ancient bargain—one made to save the town from a curse that still stirs beneath the waves. Now, with Clara's arrival, the sea demands its final payment, and Amos must choose between his immortality and the girl who holds the key to his freedom.
