她如复仇女神，冷酷无情，剑锋指向那些曾经侵害过她的灵魂。处男第一次做什么感觉

　　A letter for Miss Marple from a recently deceased friend promises a large reward for investigating a crime - without telling her who was involved, or when it happened! When she accepts, she is given a reservation for a coach tour of historic homes and gardens. She has fifteen fellow-passengers - and one of them knows a murderer's secret and someone is preparing to kill.