With classic elements galore, Gangster Squad delivers the goods. Sean Penn turns in a killer performance as a boxer turned mob boss in mid-20^th century Los Angeles. His character is almost cartoonish, like a Dick Tracy bad guy. Josh Brolin, as leader of the secret Squad, is not unlike Dick Tracy, with a Tess Trueheart type wife.

With a hint of the colors of retouched picture postcards and the requisite armada of late 40’s automobiles, Gangster Squad is drenched in nostalgia. The wardrobes (including men in hats), the red lipstick, the smoking, comments about WW II, the music all do a nice job of capturing the era. Josh Brolin’s opening and closing narrations echo another staple of this genre.

Penn’s character Mickey Cohen controls not only vice but also the majority of police and political leaders in metro LA. Nick Nolte, looking healthier than in his other recent roles, is the LAPD chief (not been bought off by Cohen) who anoints Brolin’s character John O’Mara as leader of a secret gangster squad.

O’Mara recruits a team of cops to shut down Cohen and his operations. Ryan Gosling is a cool LAPD detective named Jerry Wooters who successfully hits on Cohen’s babe, Grace Faraday, played by Emma Stone. He eases his way into the squad and becomes a vital team member.

The squad operates almost like the Mission Impossible teams of prior movies and TV shows. They even have a tech guy, played by the nerdy Giovanni Ribisi, who plants a microphone in Cohen’s digs and listens in from a remote shack.

The Gangster Squad and Cohen’s crooks trade punches throughout the film until the last round, when the knockout blow is finally delivered.

Gangster Squad is an entertainingly violent movie that’s not quite a classic, but has all the LA period piece cops and robbers stuff. One quibble is the casting of Emma Stone as the babe. A more mature, less innocent looking actress may have been more effective in the role.

Word is that the movie was originally slated for a September, 2012, release. But because of its violent content (and one particular sequence) was retooled and held back after the Aurora, Colorado shootings. Nonetheless, Gangster Squad is action-packed with great characters, a strong cast and a good story. I’m already looking forward to seeing it again.