Prior to the Upfronts we were worried that progress had slowed on TNT's forthcoming noir series 'Lost Angels,' but with filming set to commence this summer, more and more announcements have arrived. Ed Burns will join the series in a recurring role, while former 'Prison Break' and 'Cult' star Robert Knepper has been upped to series regular, but whom will each play?

According to Deadline, Burns will take the recurring role of legendary gangster Bugsy Siegel, who moved to the West Coast from his original life of crime on the East (see: 'Boardwalk Empire'). Meanwhile, Robert Knepper has been upped from recurring to series regular for his role as Sid Rothman, a rank-and-file mobster working for Cohen. Knepper's original role grew after the actor became available with the cancellation of The CW's 'Cult.'

Written and directed by Frank Darabont, ‘Lost Angels’ revolves around the police force’s pursuit of mobster Mickey Cohen and takes its basis from John Buntin’s book ‘L.A. Noir: The Struggle For The Soul Of America’s Most Seductive City,’ which recounts the story of decades-long conflicts between the LAPD and the city’s criminals. The series features ‘The Walking Dead‘ star Jon Bernthal as Joe Teague, the LAPD cop at the center of the drama, and ‘Heroes’ alum Milo Ventimiglia as a former marine who served with Bernthal’s character during World War II and now works as a budding lawyer for the mob.

Rounding out the high-profile cast is 'Ghostbusters' star Ernie Hudson, former ‘Justified’ guest star Neal McDonough as LAPD Chief Parker, Darabont collaborator Jeffrey DeMunn as detective Hal Morrison, and Alexa Davalos as Jasmine, a “beauty with a complicated past.” Also, ‘Star Trek Into Darkness‘ and ‘The World’s End‘ star Simon Pegg will appear in the show’s pilot as third-rate comedian and mob hanger-on Hecky Nash.

'Lost Angels' has already shot its pilot and will film the remaining episodes of its initial order this summer, but what do you think? Are you interested to see what TNT's noir series has to offer?

More From ScreenCrush