Sherlock The Final Problem (Season 4, Episode 3)
TV Episode | 89 min | Crime, Drama, Mystery

Sherlock

The Final Problem (Season 4, Episode 3)

TV Episode | 89 min | Crime, Drama, Mystery

A dark secret in the Holmes family rears its head with a vengeance, putting Sherlock and friends through a series of sick, manipulative psychological and potentially fatal games.

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Cast	+ Add Cast
29 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)
Mark Gatiss Mycroft Holmes Mycroft Holmes See fewer	The League of Gentlemen (1999)
Una Stubbs Mrs. Hudson Mrs. Hudson See fewer	Sherlock (2010)
Rupert Graves DI Lestrade DI Lestrade See fewer	Sherlock (2010)
Louise Brealey Molly Hooper Molly Hooper See fewer	Brian and Charles (2022)
Amanda Abbington Mary Watson Mary Watson See fewer	Sherlock (2010)
Andrew Scott Jim Moriarty Jim Moriarty See fewer	All of Us Strangers (2023)
Sian Brooke Eurus Holmes (as Siân Brooke) Eurus Holmes (as Siân Brooke) See fewer	Sherlock (2010)
Art Malik Prison Governor Prison Governor See fewer	The Living Daylights (1987)
Timothy Carlton Mr. Holmes Mr. Holmes See fewer	Cold Comfort Farm (1968)
Wanda Ventham Mrs. Holmes Mrs. Holmes See fewer	UFO (1970)
Simon Kunz Sir Edwin Sir Edwin See fewer	GoldenEye (1995)
Richard Crehan Ben Ben See fewer	The Monuments Men (2014)
Ralph Ineson Vince Vince See fewer	The Witch (2015)
Matt Young Young Police Officer Young Police Officer See fewer	Sherlock (2010)
Tam Mutu Leonard Leonard See fewer	Waking the Dead (2000)
Clare Foster Velma Velma See fewer	Nolly (2023)
Brett Allen Special Unit Guard Special Unit Guard See fewer	Official Secrets (2019)
Rhys Rusbatch Technician Technician See fewer	Steeltown Murders (2023)
Paul Weller The Viking The Viking See fewer	Grosse Pointe Blank (1997)
Tom Stoughton Young Sherlock Young Sherlock See fewer	Sherlock (2010)
Aaron Richards Young Mycroft Young Mycroft See fewer	Sherlock (2010)
Indica Watson Little Eurus Little Eurus See fewer	Who Is Erin Carter? (2023)
Honor Kneafsey Girl on Plane Girl on Plane See fewer	Crooked House (2017)
Harry Tuffin Victor Victor See fewer	School's Out Forever (2021)
Grant Crookes Police Officer (uncredited) Police Officer (uncredited) See fewer	Lucky Man (2016)
Stuart Jason Lee Armed Guard (uncredited) Armed Guard (uncredited) See fewer	The Rack Pack (2016)
Volenté Lloyd The Governor's Wife (uncredited) The Governor's Wife (uncredited) See fewer	Billionaire Ransom (2016)