What I think will happen in The Last Vow (Spoiler-y?)
12 years ago
1) Mary will die. Proof? She dies in His Last Bow, the book. Also, the episode is called His Last Vow. The last vow in wedding vows is "And til death do us part" meaning either Mary or John will die.
2) Tom will be revealed to be either helping Moriarty in the past (as people have pointed out on tumblr, he looks very very much like one of the assassins) or something to do with the bonfire thing
3) John will leave. The proof, again, is from the books. I saw on Wikipedia it said that Dr Watson's final appearance was in His Last Bow.
4) The well dreaded cliffhanger that people are talking about. I think it will either have something to do with the baby or John maybe leaving.
As for Charles Augustus Magnussen (the villan) I have no idea what will happen there. I guess we'l just have to wait and see.
2) Tom will be revealed to be either helping Moriarty in the past (as people have pointed out on tumblr, he looks very very much like one of the assassins) or something to do with the bonfire thing
3) John will leave. The proof, again, is from the books. I saw on Wikipedia it said that Dr Watson's final appearance was in His Last Bow.
4) The well dreaded cliffhanger that people are talking about. I think it will either have something to do with the baby or John maybe leaving.
As for Charles Augustus Magnussen (the villan) I have no idea what will happen there. I guess we'l just have to wait and see.
FA+

Seriously though omg I really don't want Mary to die ;_;