Focus Home Interactive has let loose its E3 2012 trailer for their upcoming murder mystery duo, The Testament of Sherlock Holmes. Showing breathtaking detail and an almost LA Noire feel, the trailer lets you into the very dark world of Sherlock Holmes and Doctor Watson.

This beautiful video will give you a larger preview of the game, its dark ambiance, and its strong story centered around a controversial hero with obscure motives. This is a thrilling investigation that players will have to lead, playing as both Holmes and Watson in turns. Multiple bloody murders, a strange illness which started to plague the population of London… these are the cases they will have to investigate upon, all the while trying to discover the reasons behind the strange actions of Sherlock himself.

If you're a fan of the Sherlock Holmes, then this is definitely a title not to miss, with its intriguing layer of puzzles, mystery and deceit making you guess just who is the real killer.

The Testament of Sherlock Holmes will be out for PC, Xbox 360 and PlayStation 3 September of this year.