This audiobook is narrated by an AI Voice. A museum curator with a keen eye for prints acquires a dull and overpriced mezzotint - an unremarkable engraving of a country manor by moonlight, scarcely worth the dealer's asking price. Yet each time he sets it aside and looks again, the picture has quietly, impossibly changed: a hooded figure has appeared upon the moonlit lawn, and with every viewing it creeps a little nearer the silent house. As scholars gather to watch the engraving play out its slow and dreadful pantomime, they realise they are witnessing not a work of art but the patient re-enactment of an old and terrible crime - one that will reach its appointed end whether they care to look or not.