Preview: Season 4 | 40s

"You know why I’m here.” Here’s a brand new trailer for Sherlock, Season 4. A new season of #SherlockPBS premieres January 1st on MASTERPIECE on PBS.

Aired: 01/01/17

Rating: NR

Funding for MASTERPIECE is provided by Viking and Raymond James with additional support from public television viewers and contributors to The MASTERPIECE Trust, created to help ensure the series’ future.