Sherlock Returns in New Season 4 Trailer

Jul 24, 2016

It will have been three years since the last season of Sherlock when season four premieres on BBC in early 2017. But, finally, there’s a trailer for the new season. The action-packed footage starring Benedict Cumberbatch premiered at San Diego Comic-Con during the Sherlock panel on Sunday.

The trailer promises more of the villian Moriarty — or at least his apparent return. The character played by Andrew Scott seemingly died at the end of season two. The trailer also teased plenty of explosions, Sherlock shooting a gun and the genius even getting into a physical fight.

Co-creator and Mycroft actor Mark Gatiss has said that this will be the darkest season yet. And Benedict Cumberbatch, Holmes himself, said there will be a tragic turn. "It's a genuine roller coaster," he said at the panel. "There are quite a few tears."

The panel, however, was rather jovial with panelists singing a belated happy birthday to Benedict Cumberbatch, who recently turned 40. And the creators weren't afraid to mess with the fans a little bit. When a fan asked Cumberbatch what his first line in season four, episode one is, he replied, "Yes."

TIME may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.