When famed Byronesque poet Hugh de Bonne is discovered dead in his bath one morning, his cousin Robert Highstead, a post-mortem photographer, is charged with a simple task: transport Hugh's remains for burial in a chapel. This chapel, a stained-glass folly set on the moors, was built by de Bonne sixteen years earlier to house the remains of his beloved wife and muse, Ada. Since then, the chapel has been locked and abandoned, a pilgrimage site for the rabid fans of de Bonne's last book, The Lost History of Dreams.
However, Ada's grief-stricken niece refuses to open the glass chapel for Robert unless he agrees to her bargain: before he can lay Hugh to rest, Robert must record Isabelle's story of Ada and Hugh's ill-fated marriage over the course of five nights.
As the mystery of Ada and Hugh's relationship unfolds, so too does the secret behind Robert's own marriage - including that of his fragile wife, Sida, who has not been the same since a tragic accident three years earlier and the origins of his morbid profession that has him seeing things he shouldn't . . . things from beyond the grave.