Series 4
(2017)← Back to season list
Season Regulars 8
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![Benedict Cumberbatch]()
Benedict Cumberbatch
Sherlock Holmes -
![Martin Freeman]()
Martin Freeman
John Watson -
![Rupert Graves]()
Rupert Graves
Greg Lestrade -
![Mark Gatiss]()
Mark Gatiss
Mycroft Holmes -
![Una Stubbs]()
Una Stubbs
Mrs. Hudson -
![Amanda Abbington]()
Amanda Abbington
Mary Morstan -
![Louise Brealey]()
Louise Brealey
Molly Hooper -
![Lara Pulver]()
Lara Pulver
Irene Adler
Crew 1
Writing
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![Arthur Conan Doyle]()
Arthur Conan Doyle
Characters
Episodes 3
Sherlock waits to see where Moriarty will make his posthumous move. One mysterious case in particular baffles Scotland Yard - but Sherlock is more interested in a seemingly-trivial detail. Why is someone destroying images of the late Prime Minister Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work? Something with its roots deep in Mary Watson's past…
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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.
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Holmes and Watson travel to Europe to escape Moriarty's vengeance.
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