One afternoon in 1839, Emily Lowry’s husband vanishes from Wreckers’ Cay, an isolated island off the coast of Key West where he tends to the lighthouse. Emily has no choice but to take over her husband’s duties tending the light to support her children. A runaway slave who washes up on the beach proves himself an enormous help and soon wins the hearts of the Lowry family. His place in Emily’s life, as steadfast now as the light, will forever change their futures..