Rumor has it someone will die and another will come back to 'Sherlock' season 4 - aside from Moriarty, of course.
Series showrunner Steven Moffat revealed his "devastating" plans for the new season in a past interview.
"We have a plan to top season 3, and our plan is so devastating that our cast was reduced to tears," Moffat told Deadline after the show's rousing win at the Emmy Awards. "Mark (Gatiss) and I are excited about what we have coming up."
According to Fashion and Style, this could mean the death of Mary Watson, John Watson's wife. The online publication claims that Mary's death is mentioned in one of Sir Arthur Conan Doyle's stories, 'The Adventure of the Empty House.'
"In some manner [Sherlock] had learned of my own sad bereavement,' the line in the short story read.
With the big revelation of Mary's character in the previous season, however, her passing wouldn't be swept under the rug so easily. Discovered as a former assassin, Mary was one of the main reasons that drove Sherlock to kill Magnussen.
She won over fans of the show (and Sherlock) with her quirkiness and sincere love for John. Viewers are already looking forward to seeing the new couple's baby in 'Sherlock' season 4.
If she does die, then, hopefully, the producers would give her a death scene worthy of a strong female character. They can also fake her death, they have done it before.
Another rumor that's going around is Irene Adler's return this season. The only woman that outsmarted the brilliant detective, Adler will reportedly come back despite only appearing once in the original literature.
"The danger is you have a successful character like Irene Adler and she makes a massive impact because that story is so perfect, but if she then moves in around the corner, it becomes a bit cosy," Benedict Cumberbatch told Digital Spy in December.
The question that most fans ask, however, is whether Stephen Moffat and Mark Gatiss will develop a loveline for the detective. They have already stirred the fandom with that imagined kiss Sherlock shared with Molly. Would a real kiss be possible in 'Sherlock' season 4?
