Set in England in 1786, this masterful thriller from British author Taylor (Bleeding Heart Square) opens on a tragic note. In the months since London bookseller John Holdsworth's little son, Georgie, slipped into the Thames and hit his head against a coal barge with fatal results, Holdsworth's grief-stricken wife, Maria, has repeatedly visited the site of the boy's death. Until her own untimely death, Maria spends most of her days with a woman who relays messages from Georgie from the beyond. At loose ends, Holdsworth, who's written a treatise debunking ghost sightings, accepts an assignment from Lady Anne Oldershaw in Cambridge to prove to her son, a Jerusalem College student who claims to have seen a ghost, that he's suffering from a delusion. Fans of Michael Cox and Charles Palliser will relish this sophisticated period puzzle, which takes an intriguing look at the age-old question of the reality of ghosts.