Sherlock is back, but will things ever be the same again?

The fourth series begins with the nation’s favourite detective, the mercurial Sherlock Holmes, back once more on British soil, as Doctor Watson and his wife, Mary, prepare for their biggest ever challenge - becoming parents for the first time.

一千个人就有一千个福尔摩斯。一百多年来，这位历史上最著名的侦探从书中走上舞台，不管是舞台剧，还是电影和电视剧，各位才华横溢的演员用自己的表演让夏洛克·福尔摩斯一直活跃在银幕上和观众的视线中。本片按照时间顺序向观众介绍了不同版本和特点的福尔摩斯，让这位大名鼎鼎的神探的形象更加鲜明。