Proud and solitary, Eel Marsh House surveys the windswept reaches of the salt marshes beyond Nine Lives Causeway. Arthur Kipps, a junior solicitor, is summoned to attend the funeral of Mrs Alice Drablow, the house's sole inhabitant, unaware of the tragic secrets which lie hidden behind the shuttered windows.
It is not until he glimpses a wasted young woman, dressed all in black, at the funeral, that a creeping sense of unease begins to take hold, a feeling deepened by the reluctance of the locals to talk of the woman in black - and her terrible purpose.
Years later, as an old man, he recounts his experiences to an actor in a desperate attempt to exorcise the ghosts of the past. The play unfolds around the conversations of these two characters as they act out the solicitor's experiences on Eel Marsh all those years ago.