Sherlock has 13 episodes in total.

This count includes all episodes across the show’s four series (seasons) and the one-off special. | Series | Year(s) | Episodes | Notes | |--------|---------|----------|-------| | Series 1 | 2010 | 3 | Each episode is 90 minutes | | Series 2 | 2012 | 3 | Each episode is 90 minutes | | Series 3 | 2014 | 3 | Each episode is 90 minutes | | Series 4 | 2017 | 3 | Each episode is 90 minutes | | Special | 2016 | 1 | The Abominable Bride (90 minutes) |