Fosse House, home of the reclusive Luisa Gilmore, harbours curious secrets - secrets that stretch back almost a century, to the ill-fated Palestrina Choir in its remote Belgian convent.
When Oxford don Michael Flint travels to the house to trace the origins of the long-dead Choir, he is at once aware of the house's eerie menace. Who is the shadowy young man who lurks in the grounds, and why does his exact likeness appear in a sketch...