The Voice from the Minaret.

Lord Carlyle governs a province in India. Although he weds the beautiful Adrienne, he can't make her love him. And no wonder -- he's not only cruel, he's unfaithful. Adrienne leaves him and boards a ship with the intention of returning to England. But on the boat she meets Andrew Fabian, who is studying for the clergy. They fall in love, and he convinces her to accompany him on a pilgrimage to Damascus.