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S1:E1

A Study in Pink

A war hero, invalided home from Afghanistan, meets a strange but charismatic genius who is looking for a flatmate; it is London, 2010, and Dr Watson and Sherlock Holmes are meeting for the first time. A string of impossible suicides has Scotland Yard baffled - and only one man can help.

S1:E3

The Great Game

A strange clue in an empty room, a blood-soaked car, a priceless Old Master, a deranged bomber. With the clock ticking, the curtain rises on a battle of wits between Sherlock, John and the shadowy stranger who seems to know all the answers...

S2:E1

A Scandal in Belgravia

Blackmail threatens the monarchy and Sherlock is about to meet the woman who beats him.

S2:E2

The Hounds of Baskerville

A hound from hell. Sherlock's most famous case. But is a monster really stalking Dartmoor?

S2:E3

The Reichenbach Fall

The return of Moriarty. The crime of the century. Can Sherlock possibly survive?

S3:E1

The Empty Hearse

Two years on from reports of his Reichenbach Fall demise, Sherlock resurfaces as London comes under threat of a huge terrorist attack. John, though, has mixed feelings – he's delighted by the return of his best friend, but harbours worries that the consulting detective's reappearance will have an adverse affect on his settled domestic life, in particular his romance with Mary Morstan.

S3:E2

The Sign of Three

Sherlock faces his biggest challenge of all – delivering a Best Man’s speech on John’s wedding day! But all isn’t quite as it seems. Mortal danger stalks the reception – and someone might not make it to the happy couple’s first dance. Sherlock must thank the bridesmaids, solve the case and stop a killer.

S3:E3

His Last Vow

A case of stolen letters leads Sherlock Holmes into a long conflict with Charles Augustus Magnussen, the Napoleon of blackmail, and the one man he truly hates. But how do you tackle a foe who knows the personal weakness of every person of importance in the Western world?

S4:E1

The Six Thatchers

Why is someone destroying images of Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work?

S4:E2

The Lying Detective

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.