Sherlock — Series 4
3 episodesFirst aired 1 January 2017
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.
E1The Six Thatchers
7.0Jan 20171h 29m
Why is someone destroying images of Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work?
E2The Lying Detective
8.4Jan 20171h 29m
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.
E3The Final Problem
7.5Jan 20171h 29m
Holmes and Watson travel to Europe to escape Moriarty's vengeance.