The play is a murder mystery.

这出戏说的是一桩神秘的凶杀案。

《牛津词典》

We called white people by their trade, like characters in a mystery play.

我们以职业头衔来称呼白人，就像神秘剧中的人物一样。

youdao

Mr. Mail Man, Mr. Insurance Man, Mr. White and Chocolate Milk Man, Mr. Landlord Man, Mr. Policewe: we called white people by their trade, like characters in a mystery play.

邮差先生、保险先生、卖巧克力牛奶的白人先生、地主先生、警察先生：我们用他们的职业来称呼白人，就像神秘剧里的角色一样。

youdao

The rest of the play tautly unravels the mystery of the missing house deed, but the drama is as much about belonging and ambition as it is about racism, poverty and envy.

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The picture operates as a hard action picture (the film is somewhat casually violent, even when it should perhaps stop and smell the corpses) as well as a character play with a touch of mystery to go with it.

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The mystery is what role the new man will play.

ECONOMIST: Three��s company