A new case will be open soon, and "it's not a game anymore."

That cryptic message is the main takeaway from and the title of a new "Sherlock" Season 4 teaser trailer. The BBC dropped the short preview Wednesday in preparation for the show's January return. Before you get your hopes up too high, though, know that the teaser keeps a tight lid on any plot points to come. As always, any hints are ridiculously hard to figure out.

At least we get a look at our favorite crime-solving duo. The teaser shows Sherlock Holmes (Benedict Cumberbatch) and Dr. John Watson (Martin Freeman) taking a moment to sit down together. Whether they're resting or working is anyone's guess, but it's still nice to get a peak.

The teaser doesn't offer much, but it will have to tide us over until the next time the BBC decides to drop us some breadcrumbs.

"Sherlock" Season 4 premieres Jan. 1 on PBS Masterpiece with the episode "The Six Thatchers."