My rating: 4 of 5 stars
Buy on Amazon: Hardcover
The mystery revolves around the theft of the magnificent Passio Christi, a precious bloodstone, a fist sized ruby which is an extremely important Christian relic and the death of Sir Robert Kilverby in a locked room who was the person holding it in safe custody. The Passio Christi is also linked to the Wyvern Company, who were the ones who had ‘found’ it during their exploits in the war in France. When one of the men in the Company is also found murdered, the mystery deepens and Friar Athelstan and Sir John Cranston, Coroner of London are called in to investigate.