The trailer for Gangster Squad, the major cop movie starring Ryan Gosling, Josh Brolin, and Sean Penn as L.A.’s Capone — Mickey Cohen — has just been released. Set in the late 1940s, it’s sizzling! It opens Sept. 7. Want the skinny on the decades-long grip Hollywood mob boss Mickey Cohen held on L.A.? And the true story of the pint-sized macher, NOW? Buy MICKEY COHEN: The Life and Crimes of Crime of L.A’s Notorious Mobster. Packed with juicy details, steaming stars and raunchy revelations — this macro-picture of the L.A. underworld, from Prohibition to 1976, is where you’ll find the hidden faces who did the dirty, glean rare government documents, unseen archival photos — and get down to cases!