The new 'Sherlock' season 4 teaser is a straight-up bloodbath

sherlock

Photo via Sherlock/YouTube

BTW

The latest Sherlock teaser is bloody and enigmatic.

Following the full-length trailer for season 4, the new clip is a tableau in John and Sherlock's living room, which appears to be swimming in blood. The tagline says, "It's not a game any more," following the show's habit of claiming to get darker with every season.

The first episode airs on New Year's Day, 2017. Are you ready?