A modern update finds the famous sleuth and his doctor partner solving crime in 21st century London.
The best episode of "Sherlock" season 4 is "The Six Thatchers", rated 7.6/10 from 26292 user votes. It was directed by Rachel Talalay and written by Mark Gatiss. "The Six Thatchers" aired on 1/1/2017 and is rated 1.5 point(s) higher than the second highest rated, "The Lying Detective".
Why is someone destroying images of Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work?
Director: Rachel Talalay
Writer: Mark Gatiss
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.
Director: Nick Hurran
Writer: Steven Moffat
Holmes and Watson travel to Europe to escape Moriarty's vengeance.
Director: Benjamin Caron
Writer: Steven Moffat, Mark Gatiss