Immediately after the season finale of The Great British Bake Off finished airing, BBC One dropped a new full-length trailer for the upcoming feature-length Sherlock special, which is expected to air this Christmas. At the Sherlock panel at San Diego Comic Con, the BBC and co-producer PBS released a new image and the first trailer for the upcoming Victorian era special, which is expected to debut on BBC One this Christmas and on PBS in the U.S. in 2016. BBC One has unveiled the first image from the upcoming 90 minute Sherlock special. 