Lady Kiera Darby and Sebastian Gage become tangled in a dangerous web of religious and political intrigue. In July 1831, in the midst of their idyllic honeymoon in England's Lake District, their seclusion is interrupted by a missive from Kiera's new father-in-law asking them to investigate a deadly incident involving a distant relative of the Duke of Wellington which has taken place at an abbey south of Dublin, Ireland. Intent on discovering what kind of monster could murder a woman of the cloth, the couple travel to Rathfarnham Abbey school. As they work to unravel the crime, a second nun is slain in broad daylight near a classroom full of young girls.
