The first Sherlock Holmes: A Game of Shadows trailer has turned up online - and it looks like it could actually be another good Guy Ritchie film.

As you'd expect, the Sherlock Holmes sequel continues the detective's time-honoured traditions, such as gunfights, cross-dressing and a ridiculous amount of slow-motion. Given that Sherlock's last outing was actually rather entertaining, it's good to see Robert Downey Jr back in the non-deer stalkered role and Jude Law still enjoying himself as sidekick Dr Watson.

But there's more exciting stuff afoot than their witty banter (I hope that "Get it out of my face..." line doesn't become their signature joke) because Holmes has some new cast members: Stephen Fry's brother, Mycroft, Noomi Rapace's fortune teller, Sim, and (most exciting of all) Jared Harris as Moriarty.

There's only a brief glimpse of Mad Men's Lane Pryce and his sinister British accent, but he's sitting down, he has a beard and he's wearing a hat - in other words, he's perfect.

Revolving around a suicide-turned-murder, Michele Mulroney & Kieran Mulroney's script is partly based on Arthur Conan Doyle's The Final Problem, which sees Sherlock travel to Switzerland and check out the lovely Reichenbach Falls...

So far, it all sounds promising. But will Sherlock survive his waterfall voyage? Will Moriarty get drunk and shout "MONSTAAA!" before the end credits? Will this be the second Guy Ritchie film in a row that's actually good? Either way, it'll be coming along after the BBC's second series of Sherlock so it'll have a lot to live up to.

Sherlock Holmes: A Game of Shadows is released in UK cinemas on Friday 16th December. Read on for the full video - and for the first two posters.