On the highest point of an island, in a house clinging to the edge of a cliff, live Mary Rose and Harold Grapes, a retired couple still mourning the death of their son thirty-five years before. Weighed down by decades of grief and memories, the Grapeses have never moved past the tragedy. Then, on the eve of eviction from the most beautiful and dangerously unstable perch in the area, they're uprooted by a violent storm. The disbelieving Grapeses and their home take a free-fall slide into the white-capped sea and float away.

As the past that once moored them recedes and disappears, Mary Rose and Harold are delivered from decades of sorrow by the ebb and flow of the waves. Ahead of them, a light shimmers on the horizon, guiding them toward a revelatory and cathartic new engagement with life, and all its wonder. Wildly imaginative, deeply poignant, and entirely unexpected, Lights on the Sea sweeps readers away on a journey of fate, acceptance, redemption, and survival against the most rewarding of odds.