Following the death of her parents, journalist, Lilly, moves from San Francisco to write a novel at foggy Lawson's Landing. Unhappy with her boyfriend, she moves into her parent's magnificent Art Deco mansion overlooking the sea where she notices a man often walking in the evening mist along the shore. Local store owner, Jeb, informs her of the area's famous shipwreck history and is keen to win Lilly's heart. She discovers a letter in an old cupboard written by a man to his lover, who once lived there, about a dangerous secret. Old newspaper articles reveal two murders at the house before her parents moved in twenty years earlier. Noises around the house begin to unnerve Lilly, and she notices movement at night in the fog. Researching the area's shipwreck history, she discovers the possibility of valuable cargo lying on the sea floor. But who is the man walking in the mist at night? Why won't he answer her calls? Lilly begins to unravel a complex mystery routed in the past, and soon discovers something unexpected about her family that affects her life and future.