The Final Problem (Sherlock)

"**The Final Problem**"
"The Final Problem"
Sherlock episode
Episode no.	Series 4; Episode 3
Directed by	Benjamin Caron
Written by	Steven Moffat; Mark Gatiss;
Featured music	David Arnold; Michael Price;
Cinematography by	David Luther
Editing by	Yan Miles
Original air date	15 January 2017
Running time	89 minutes
Guest appearances
	Andrew Scott as Jim Moriarty; Sian Brooke as Eurus Holmes; Honor Kneafsey as Girl on Plane; Timothy Carlton as Mr. Holmes; Wanda Ventham as Mrs. Holmes; Art Malik as Prison Governor; Tom Stoughton as Young Sherlock; Indica Watson as Little Eurus; Simon Kunz as Sir Edwin; Richard Crehan as Ben; Matt Young as Young Police Officer; Tam Mutu as Leonard;

"The Final Problem" is the third episode of the fourth series of the British television series Sherlock, and the thirteenth episode overall. The episode first aired on BBC One, PBS, Channel One and 1+1 on 15 January 2017. To date, no further episodes of Sherlock have been produced, making "The Final Problem" the presumptive series finale.