Lukis and Van Coon were part of a smuggling operation. One of them stole something in China. Something valuable.

路基斯和范孔是走私团伙的成员。其中一人从中国偷了件价值连城的珍宝。

How do you know it was Van Coon, not Lukis? Even the killer didn't know that.

你怎么知道是范孔而不是路基斯？就连凶手都不知道。

Mm. Cover would have been perfect. Businessman, making frequent trips to Asia. Lukis was the same, a journalist writing about China.

他们的职业都是绝妙的掩护。商人，频繁赴亚洲出差。路基斯也一样，他是报道中国的记者。

The killer finds Lukis at the library, he writes the cipher on the shelf where he knows it'll be seen. Lukis goes home.

凶手在图书馆找到了路基斯，并在他能看到的书架上留下密码。路基斯逃回家。