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.。Sandra、Samuel以及他们视力有障碍的儿子Daniel在偏远山区生活了一年。一天,Samuel在房子外面被发现死亡,警方立即展开了涉嫌命案的调查。在不确定的情况下,Sandra被控:这是自杀还是谋杀?一年后,Daniel参加了母亲的审判,这也是对他父母关系的真正剖析。。