There is no crime to detect, or, at most, some bungling villainy with a motive so transparent that even a Scotland Yard official can see through it.

• 竟没有罪案可以侦查，顶多也不过是些简单幼稚的罪案，犯罪动机浅显易见，就连苏格兰场的人员也能一眼识破。