A: In my opinions, someone else has caused the fire of this house.

我的意见是，人故意放火烧了这所房子。

B: Who do you think that has the motive?

你认为谁会有这样的动机呢?

A: I’m not sure now. In any case, let’s first make some careful investigations.

我现在还不能肯定。无论如何，让我们做一些认真的调查。

B: OK, murder will out!

好的，事情总会水落石出。

A: Yeah.

就是。