'Sherlock Season 3 Finale': What to Expect from 'His Last Vow'

Here we are, 'Sherlock' fans — the final episode of the third installment is now upon us and I couldn't be more sad. It feels as if only mere weeks have gone by since we were finally reunited with our favorite detective drama. (Oh wait...it WAS only a few weeks ago. Man, these three-episode seasons are a killer.) Anyway, the point is that we've reached the end of the road, or at least we will come Sunday. But boy-oh-boy does it go out with some jaw-dropping reveals.

I was able to catch an early showing of Season 3's finale "His Last Vow" and am just itching to throw a bunch of teasers your way. So if spoilers aren't exactly your cup of tea then I'd steer clear of what lies ahead. As for the rest of you, let's see what we can deduce!

-Watson is such a badass in this episode and shows off some serious combat moves. Like Mary, get ready to find him even more attractive.

-Lars Mikkelsen takes the scene as the highly anticipated Season 3 "big bad," who possesses a talent very akin to Sherlock's. It's also worth mentioning that the actor's brother is 'Hannibal' star Mads Mikkelsen, which should give you some indication of what to expect: pure evil.

-We surprisingly haven't seen the last of Mary's Maid of Honor, Janine, who becomes a shocking part of Sherlock's life. You'll want to be sitting down for this one.

-A secret identity is revealed about someone that even Sherlock couldn't see coming.

-Sherlock and John take on a new client, but you won't believe who it is.

-By episode's end, two people get shot, but only one survives. Meanwhile, another impending danger rears its ugly head. (Hold onto your deerstalker hats, folks.)

-Sherlock reveals his full name. (Hint: Sherlock is actually a middle name!)

‘Sherlock’s Season 3 finale airs in the U.S. on Sunday, Feb. 2 at 9:58/8:58c on PBS.