A demon summer

Someone has been trying to poison the 15th Earl of Lislelivet. Since he has a gift for making enemies, no one finds this too surprising. What is surprising is that the poison was discovered in a fruitcake made and sold by the Handmaids of St. Lucy of Monkbury Abbey. Max Tudor, vicar of Nether Monkslip and former MI5 agent, is asked to investigate. But just as Max comes to believe the poisoning was accidental, a body is discovered in the cloister well.