Watch: Johnny Depp hunts for Biggie Smalls' killer in the first trailer for 'City of Lies'

The 1997 murder of rap icon Christopher "The Notorious B.I.G." Wallace remains one of the most compelling unsolved crimes in the history of Los Angeles. Today--on what would have been Biggie's 46th birthday--we get the first trailer for the upcoming Johnny Depp movie "City of Lies," which looks into the circumstances around the crime and its potential coverup.

Depp plays real life L.A.P.D. detective Russell Poole in the film, with Oscar-winner Forest Whitaker portraying 'Jack' Jackson, a journalist who is also looking into the case. According to the synopsis on the film's YouTube page, the two men team up 20 years after the murder and "unravel a growing web of institutional corruption and lies. Relentless in their hunt, these two determined men threaten to uncover the conspiracy and crack the foundation of the L.A.P.D. and an entire city."

"City of Lies," which is scheduled to be released on Sep. 7, follows two different shows that also explored Wallace's murder and its possible connection to the killing of his rap rival, Tupac Shakur. Fox's two-hour documentary special "Who Shot Biggie & Tupac?" aired last September, while the 10-part USA show "Unsolved" aired earlier this year.

Related: Check out our list of the 10 best Biggie songs

Watch the "City of Lies" trailer in the video embedded above.