Watch Sherlock Season 3 full episodes online, free and paid options via our partners and affiliates.

Charles Augustus Magnussen on Sherlock
Watch Sherlock Season 3 Episode 3
"His Last Vow"
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Sherlock runs into Charles Augustus Magnussen this week. Has he met his match?

Sherlock as Best Man
Watch Sherlock Season 3 Episode 2
"The Sign of Three"
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It's John and Mary's wedding day! This unique episode is centered around Sherlock's speech as Best Man.

Watson with a Mustache
Watch Sherlock Season 3 Episode 1
"The Empty Hearse"
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Is Sherlock alive?!? The fate of this beloved sleuth is revealed on the Season 3 opener.