Sherlock The Sign of Three (Season 3, Episode 2)
TV-14
TV Episode | 86 min | Crime, Drama, Mystery

Sherlock

The Sign of Three (Season 3, Episode 2)

TV-14

TV Episode | 86 min | Crime, Drama, Mystery

Sherlock tries to give the perfect best man speech at John's wedding when he suddenly realizes a murder is about to take place.

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Cast	+ Add Cast
34 cast members

Name	Known for
Benedict Cumberbatch Sherlock Holmes Sherlock Holmes See fewer	The Imitation Game(2014)
Martin Freeman Dr. John Watson Dr. John Watson See fewer	Black Panther(2018)
Una Stubbs Mrs. Hudson Mrs. Hudson See fewer	Sherlock(2010)
Rupert Graves DI Lestrade DI Lestrade See fewer	Sherlock(2010)
Mark Gatiss Mycroft Holmes Mycroft Holmes See fewer	The League of Gentlemen(1999)
Louise Brealey Molly Hooper Molly Hooper See fewer	Brian and Charles(2022)
Amanda Abbington Mary Morstan Mary Morstan See fewer	Sherlock(2010)
Vinette Robinson Sgt Sally Donovan Sgt Sally Donovan See fewer	Sherlock(2010)
Lara Pulver Irene Adler Irene Adler See fewer	Maternal(2023)
Alistair Petrie James Sholto James Sholto See fewer	Rogue One: A Star Wars Story(2016)
Alice Lowe Tessa Tessa See fewer	Sightseers(2012)
Yasmine Akram Janine Janine See fewer	Sherlock(2010)
Oliver Lansley David David See fewer	Flack(2019)
Ed Birch Tom Tom See fewer	The Hurricane Heist(2018)
Jalaal Hartley Photographer Photographer See fewer	Sugar Rush(I)(2005)
Adam Greaves-Neal Page Boy Page Boy See fewer	The Young Messiah(2016)
Helen Bradbury Mum Mum See fewer	Sherlock(2010)
Alfred Enoch Bainbridge Bainbridge See fewer	Harry Potter and the Order of the Phoenix(2007)
Tim Chipping Duty Sergeant Duty Sergeant See fewer	Troy(2004)
Will Keen Major Reed Major Reed See fewer	Operation Mincemeat(2021)
Ritu Arya Gail Gail See fewer	Red Notice(2021)
Georgina Rich Charlotte Charlotte See fewer	Black Mirror(2011)
Wendy Wason Robyn Robyn See fewer	Creeped Out(2017)
Debbie Chazen Vicky Vicky See fewer	Suzie Gold(2004)
Nicholas Asbury Landlord Landlord See fewer	Alma's Not Normal(2020)
Jozef Aoki Japanese Tourist (uncredited) Japanese Tourist (uncredited) See fewer	The Forest(I)(2016)
Laura Dale Beautiful Girl (uncredited) Beautiful Girl (uncredited) See fewer	Servants' Quarters(2016)
Alexandra Doyle Woman in Mind Palace (uncredited) Woman in Mind Palace (uncredited) See fewer	House of the Dragon(2022)
Lisa Jay Jenkins Raver (uncredited) Raver (uncredited) See fewer	Hearts at War(2016)
Georgie Leonard Bridesmaid (uncredited) Bridesmaid (uncredited) See fewer	The Deacon Suite(2012)
Barrie Martin Tourist (uncredited) Tourist (uncredited) See fewer	Total Chaos(2014)
Adam Prickett Spectator (uncredited) Spectator (uncredited) See fewer	Assassin's Creed(2016)
Clem So Raver (uncredited) Raver (uncredited) See fewer	Exodus to Shanghai(2015)
Lucy Trotman Wedding Guest (uncredited) Wedding Guest (uncredited) See fewer	Contact 4:12