Lord Hugo Anstead and the Mayfair Detective Agency investigate the mysterious poisoning of retired legal assistant Joan Kendall at Meadowbrook Cottage . . . where everyone is a suspect. A summer tea party turns deadly in the English countryside, as the village sleuths are on the trail of a cunning murderer. Everyone is a suspect, including retired dentist, Charles Ardwell, his socially ambitious wife, Caroline, their lazy niece, Cressida, and their studious nephew, Alec. When Lord Hugo and the teatime sleuths go undercover at the elegant country estate, they unravel a trail of danger and deception as they race to solve the case before the murderer strikes again.