'A foolish monk stole the Devil′s favourite diadem, and the Devil wants it back.
'It is mid-twelfth century Europe and Evelyn Langtofte joins an aristocratic household to attend Adelie, the wife of the Earl of Pengraic, a powerful Lord of the Marches – the dark Welsh borderlands. Then a plague that has swept Europe overtakes England and as life descends into chaos and civil disorder, Evelyn is about to discover that the horrors she survived at Pengraic Castle were but a prelude to the terrifying maelstrom which now envelops her and all of her countryfolk.
'Hell has come to desecrate England, and the only thing that can possibly foil its plans are the wits of one lonely, isolated, terrified woman.' (From the publisher's website.)