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● 「他是如此聰明絕頂，曾經一度富有，現在卻一貧如洗，過去愛他的妻子現在還對他不屑一顧。而且，他已經年過而立，就要邁入不惑之年。」
● 來瞧瞧這頂不起眼的舊帽子，讓福爾摩斯娓娓道來帽子主人的軼事。他的眼睛比大夥銳利，思慮更是縝密。美麗的藍鑽石憑空消失，全倫敦唯有福爾摩斯能找出鑽石的下落。
●'He's an intelligent man. He was once rich and is now poor. His wife loved him once, but she doesn't love him now. And he's thirty or forty years old.'
●One look at an old hat, and Sherlock Holmes can tell you a lot about its owner. He sees - and thinks - a lot more than the people around him, and when a beautiful blue diamond disappears, Sherlock is the only man in London who can find it.
