Felicity Howard, a young American studying for the Anglican priesthood at the College of the Transfiguration in Yorkshire, is devastated when she finds her beloved Fr. Dominic bludgeoned to death and Fr. Antony, her church history lecturer, soaked in his blood. Following the cryptic clues contained in a poem the dead man had pressed upon her minutes before his death, she and Fr. Antony?who is wanted for questioning by the police?flee the monastery to seek more information about Fr. Dominic and end up in the holy island of Lindisfarne, former home of Saint Cuthbert. Their quest leads them into a dark puzzle . . . and considerable danger.