Sherlock Season 3 Plot
Sherlock is back, but will things ever be the same again?
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Prices last updated October 8, 2026. Pricing and availability may vary by region.
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Season 3 Episodes
3 episodes
1
78
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 about his friend's shocking return.
2
80
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.
3
82
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?