Rockstar has unveiled the official launch trailer for its next big title, L.A. Noire, which releases in New Zealand on Xbox 360 and PlayStation 3 on May 20th.

L.A. Noire is an action thriller set in the 1940s, with the player assuming the role of WWII vet and rookie cop Cole Phelps. One of the game's more interesting mechanics allows you to determine whether a suspect is lying or not by paying careful attention to their facial expressions and mannerisms, as captured by the game's famous MotionScan technology. It transpires that you can skip the action sequences, but why would you when they look like those portrayed in this trailer?