13 episodes (12 regular + 1 special).
If you’re coming from shows like The Office , Breaking Bad , or Stranger Things , three episodes might feel like a teaser. Here’s why: how many episodes of sherlock season 1
The creators, Steven Moffat and Mark Gatiss, opted for the "quality over quantity" approach. By producing three 90-minute episodes per season, the show maintains high production values, complex plotting, and cinematic visuals that wouldn't be possible with a larger episode count. This format became the standard for all four seasons of the show. Is There a Pilot Episode? 13 episodes (12 regular + 1 special)