The BBC has let loose an interactive trailer for the upcoming 3rd series of Sherlock. It includes goodies in the form of onscreen messages – reminiscent of the series’ use of flashing texts – that when clicked upon, delve deeper into what’s in store. This is the most revealing look so far at the upcoming season of the detecitve series that stars Benedict Cumberbatch and Martin Freeman. The new installments begin airing in the UK on BBC One on January 1st and follow in the U.S. on PBS on January 19th. Have fun below with the new clues: