在这部西方之星悬疑/犯罪片中,波罗的同胞著名的电影明星玛丽·玛维拉向他出示了一系列神秘的匿名信，信中要求她归还那颗美丽的钻石——“西方之星”。尽管波罗要求她退还，但玛丽还是决定保留这颗钻石，以便她能在在归亚德利夫人举办的周未晚会上在现光采。
与此同时，作为“星方之星”的姐妹钻石——“东方之星”的拥有者，归亚德利夫人也收到了同样的匿名信，同样，归亚德利夫人也拒绝了波罗要求替其保管钻石的提议。
就在专为两位贵妇人虚荣心大比拼而举行的周未晚会开幕前昔，两颗钻有利于都不翼而飞
Poirot is thrilled to receive an invitation from renowned Belgian actress Marie Marvelle. She has been receiving anonymous notes about the Western Star, a valuable diamond purchased by her husband at a cut-rate price several years before. The notes speak to the mystical nature of the diamonds and that they should be returned to their rightful owners. The next day, Lady Yardly claims to have received similar notes about her own fabulous diamond, the Eastern Star. When Poirot and Hastings visit Lord and Lady Yardly the diamond is stolen in a daring robbery. Needless to say, none of this sits well with Poirot who finds he has a very tight knot to untie.
恰到好处。
