Sherlock: The Lying Detective - Series 4 Episode 2 | Trailer: BBC One http://bit.ly/2i5lSL

BBC

Published on 1 Jan 2017

Programme website: http://bbc.in/2hfJ9XX Sherlock faces perhaps the most chilling enemy of his long career: the powerful and seemingly unassailable Culverton Smith - a man with a very dark secret indeed.

BBC ONE