Focus Home Interactive has released the E3 trailer for The Testament of Sherlock Holmes, a mature title in development at Frogware. Players will explore the streets of 19th century London through the eyes of the famous sleuth, while also solving puzzles, reenacting crime scenes, and other Sherlock type things. The trailer is posted below, and looks rather gritty. There’s a lot of chatting too. Game’s out on PC, PS3, and Xbox 360 in September.