在这部百万美元证券失窃案剧情/悬疑/犯罪片中,价值百万美元的自由证券由伦敦一苏格兰联合银行运往美国纽约，在豪华游轮“奥林匹亚”号上，奇怪地消失了。但它没有被藏起来‘奥林匹亚’号抵岸的半小时之前它们就被卖出去了，一个经纪人还发誓说他在‘奥林匹亚’号靠岸之前买了一些！
那些证券是被人从箱子里偷走的。盗贼拿那些证券怎么办？他怎么能够想办法带着证券上岸呢？你不可能通过无线电来发送证券呀！
“我很失望。”波洛说，“它太简单了！”
London & Scottish bank officer Mr. Shaw is scheduled to ride the maiden voyage of the Queen Mary to transfer $1 million in Liberty Bonds to the banks branch in America. But when Mr. Shaw is first almost run down in the street, and then poisoned, the assistant bank manager must take the bonds instead. The bank hires Poirot to accompany the bonds, so he and Mr. Hastings are able to ride the maiden voyage of the Queen Mary, much to Hastings delight. But when the bonds are stolen, suspicion falls on the assistant manager who has a history of large gambling debts.
