Rockstar has released the third trailer for L.A. Noire, compiled entirely from in-game footage, which "sheds more light on Phelps' experiences rising through the ranks of the LAPD."

Continues the press release from Rockstar: "Upon landing at the more glamourous Vice desk, he discovers illegal gambling, corruption within the force, as well as investigating a shipment of government-issued morphine killing junkies even as it causes problems for the town's most notorious mobsters."

L.A. Noire is scheduled for release on PlayStation 3 and Xbox 360 on May 20th in New Zealand.