When photographers Erin and Patrick are brought aboard the ship with their young son Lukas, they unleash a series of events that entwines their family with the ship’s dark past. As the terror unfolds around them they begin to realise there is more to this sumptuous ocean liner than meets the eye: its remarkable legacy masking violent secrets.

San Jose, California, 1906. Isolated in her labyrinthine mansion, eccentric firearm heiress Sarah Winchester believes that she is being haunted by the souls of those killed by the guns manufactured by her company.