Seasons and episodes
1Season 1 Jul. 25, 2010
1 - 1A Study in Pink Jul. 25, 2010
1 - 2The Blind Banker Aug. 01, 2010
1 - 3The Great Game Aug. 08, 2010
2Season 2 Jan. 01, 2012
2 - 1A Scandal in Belgravia Jan. 01, 2012
2 - 2The Hounds of Baskerville Jan. 08, 2012
2 - 3The Reichenbach Fall Jan. 15, 2012
3Season 3 Jan. 01, 2014
3 - 1The Empty Hearse Jan. 01, 2014
3 - 2The Sign of Three Jan. 05, 2014
3 - 3His Last Vow Jan. 12, 2014
4Season 4 Jan. 01, 2017
4 - 1The Six Thatchers Jan. 01, 2017
4 - 2The Lying Detective Jan. 08, 2017
4 - 3The Final Problem Jan. 15, 2017