London 1889, William Carson, a private detective, is sent by the Director of the Royal Mail to investigate the disappearance of several mail coaches on the London to Brighton route. After becoming involved in a coach accident in the middle of a forest, William comes across an old manor house near a paved road that has fallen into disuse. Can William solve the ghastly mystery surrounding this abode and its strange occupant? Is this place linked to the recent spate of disappearances?