Speaking to Digital Spy and other journalists, Benedict Cumberbatch, Martin Freeman, Steven Moffat and Mark Gatiss discussed the expectation around series three opener 'The Empty Hearse'.
Cumberbatch said: "I think you're in for a treat... I was too curious not to ask and figure it out myself, I think I sort of got into the same obsession that the nation did before we did it."
Of how hard it was to keep the secret, he continued: "Without meaning to patronise at all, because I don't prescribe behaviours - although it's been reported that I do - my personal preference is being surprised in the moment of watching something rather than knowing ahead of time.
"But I also understand why everyone's desperate to know because it's frustrating. It's witty and loving and intelligent enough for people to actually really enjoy it."
Cumberbatch said: "There are obviously the books to go on, not that there are clues in there necessarily as to how we get out of our version of 'The Reichenbach Fall'.
"For example, John's reaction in the book is, 'Oh great, next case'. Ours is a little bit more 21st century. Martin's got a little more air in those moments of reunification, if it can be called that."
Freeman said: "It's very satisfying... it's Mark Gatiss's script that we're doing and it's rather beautiful, as I would hope and expect. It's great.
"I guessed parts of it but it was unfair really because Steven and Mark had intimated to us some of the ingredients that it might be anyway, so I wasn't dealing with a complete blank canvas.
"I am more impressed with the people who have nothing to do with the show... they were quite close."
He continued: "There were lots and lots of theories and some of them were very good, but the way that we deal with it in this episode I think is really clever and ultimately satisfying.
"It's difficult because once something is revealed and you've already tried to guess and guess and guess the trick, when it is revealed it's very difficult not to be disappointed.
"We're not actually dealing with my other job - with wizards - it still has to be grounded in a reality - although it's a very heightened reality."
Asked if Sherlock is sympathetic to the impact of his actually being alive on Watson, Cumberbatch said: "To an extent. I think the one bit of logic that he'll never level at him is, 'Well I did save your and other people's lives'.
"But of course he is - I think he is - because he wants that friendship, he needs that friendship to a degree possibly.
"But he is Sherlock so he doesn't necessarily go about introducing himself the best way possible back into John's life, as you'll see."
Freeman said: "You can imagine if you have thought that about someone you love and it transpires not to be the case, then that's a huge piece of news.
"But we can't dwell on it too long - otherwise the show wouldn't be what it is - but we definitely deal with it.
"Ultimately it has to affect it for a bit, but you can't have two people resenting each other for however long we do this show."
Asked how guilty he felt about teasing viewers with the cliffhanger, Moffat said: "It's not teasing them about the fate of a kidnapped relative.
"It's a television programme! So not at all. That's storytelling."
Gatiss added: "Also, Doyle threw him off a waterfall and left it for ten years, then it came back. We left it two and a half minutes!
"We're quite nice. Also remember the great adage - the suspense is killing me, I hope it will last."
Of whether they had taken special measures to keep the secret, Gatiss said: "We just have to rely on people not telling.
"I remember last time, there were lots of fans standing, watching the monitor of Benedict's bloodied head... nobody said a thing - It didn't leak at all. I was very proud.
Moffat quipped: "I had them killed, obviously."
Asked if there was a temptation to leave viewers similarly on edge at the end of the upcoming trio of episodes, Gatiss said: "I promise whatever it is, we won't have to go back two years later and try and make sense of it!"
Sherlock will return for a third series on January 1, 2014 at 9pm on BBC One. It will return to US screens on Sunday, January 19 at 10pm on PBS.
A special mini-episode of Sherlock, titled 'Many Happy Returns', will also debut on Christmas Day via the BBC's interactive Red Button service.
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