In an expensive London restaurant, Julia Lovat receives a gift that will change her life. At first glance it is a book of exquisite seventeenth-century embroidery patterns belonging to a woman named Catherine Ann Tregenna. Yet in its margins are the faintest diary entries; they reveal that 'Cat' and others were stolen from their Cornish church in 1625 by Muslim pirates and taken on a brutal voyage to Morocco to be auctioned off as slaves. Captivated by this dramatic discovery, Julia sets off to North Africa to determine the authenticity of the book and to uncover more of Cat's mesmerizing story...