The gloomy fortress of Gallondean lies on the Scottish coast. Local legend has it that if the heirs to the house hear the howling of a spectral hound nearby, their death will quickly follow. The current owner of the house is Jacob Beresford who, up until the unexpected death of his father, had never set foot within its crumbling walls. Jacob, already haunted by his own demons, has no need of more ghosts, but as the First World War staggers through its last terrible months and he uncovers unsettling details of his new home’s past, the shadows seem to be growing around him.