The Sign of Three



Critic Consensus: No consensus yet.

Episode Info

Holmes delivers the best man's speech on Watson's wedding day and soon realizes that a killer is stalking someone at the reception.


Benedict Cumberbatch
as Sherlock Holmes
Martin Freeman
as Dr. John Watson
Rupert Graves
as Detective Inspector Lestrade
Una Stubbs
as Mrs. Hudson
Vinette Robinson
as Sgt. Sally Donovan
Show More Cast

The Sign of Three Photos

Critic Reviews for The Sign of Three

It was a bravura performance by Cumberbatch: his Holmes was kind, wise and witty, yet childishly jealous and endearingly naïve.

Feb 18, 2017 | Rating: 4/5 | Full Review…

We continue to see Sherlock loosen up emotionally, and the ways in which that makes him more vulnerable than he used to be.

Jan 12, 2019 | Full Review…

Funny might not be what everyone wants from the great detective, but it's hard to complain when you're laughing this much.

Feb 28, 2017 | Full Review…

After this rather light and fluffy appetizer, let's hope that next week's finale has some meat to it.

Feb 18, 2017 | Full Review…

It's now clear that the show is more interested in exploring the life of the world's greatest detective -- his personal relationships and his struggle to maintain them -- than seeing him apply his trade.

Feb 18, 2017 | Rating: 6.5/10 | Full Review…

Changing a show's format and tone is somewhat jarring. And yet Sherlock is pulling off this caper, so far. Because when you entertain at this high of a level, it's easy for viewers to ignore the whiplash and hang on for the ride.

Feb 28, 2017 | Full Review…

All in all, "The Sign of Three" was a zippy, heartfelt upgrade on last week's adventure.

Feb 22, 2017 | Rating: 4/5 | Full Review…

It's well executed and a satisfying payoff for what often seemed an erratic episode.

Feb 18, 2017 | Full Review…
Top Critic

It's all gold, but creators Steven Moffat and Mark Gatiss manage to imbue the show with heart, and end on a melancholy note.

Feb 14, 2017 | Rating: 9/10 | Full Review…

"The Sign of Three" settles in as the squishy middle of the third season. And while it solidifies this series' increasingly-meta tone (there's plenty of fan service here), it also provides breathing room for some welcome beats with its lead characters.

Feb 14, 2017 | Rating: B | Full Review…