Summer AD 80. Flavia and her friends receive an invitation to stay at the luxurious Villa Limona in Surrentum, where their friend Pulchra has a mystery she desperately wants them to solve. After a year of hardship and disasters, people are in cheerful spirits - there is even talk of love and romance. But it seems one of the guests has murder in mind. Can Flavia and her friends track down the would-be poisoner before it's too late?