"Sherlock" season 3 continues next week with episode 2, "The Sign of Three," for which PBS released a new sneak preview on Sunday, Jan. 19, and John (Martin Freeman) and Mary (Amanda Abbington) are getting married.
In this next "Sherlock" episode, Sherlock (Benedict Cumberbatch) faces his biggest challenge yet: delivering a Best Man's speech on John's wedding day. This being "Sherlock," not everything is what it seems, and it's going to be up to Sherlock to solve a case and stop a killer to make sure everyone makes it to the reception.
The promo for "The Sign of Three" offers a look at the big day, and Mrs. Hudson couldn't be happier it's here. Sherlock being Sherlock, he's indifferent. But "this is the most important day of my life," John tells him, and as his best friend – yes, he's John's best friend – Sherlock is his best man. But how will Sherlock handle being his best man and delivering a speech? Plus, get a look at the case, and something's going on at Baker Street?
"Sherlock" season 3 airs Sundays at 9:58 p.m. on PBS. What do you think of this episode 2 "The Sign of Three" preview?