At its best, Aaron Sorkin’s dialogue is cinematic music. Like many distinctive screenwriters icluding Mamet and Tarantino, he has an unmistakable style. There’s a zippy and often whip smart quality present. We heard that melody in The Social Network and on “The West Wing” and large parts of A Few Good Men, The American President, Charlie Wilson’s War, Moneyball, and Steve Jobs. On occasion, there are heavy-handed and slightly preachy notes in his wordy tunes.

We know what we’re getting in a Sorkin screenplay. An unknown until now is how he performs behind the lens and Molly’s Game answers it. The frequent highs and more infrequent lows of his writing are present here. And he pleasingly proves he’s got some style in the director’s chair, too.

The film is based on the real life story of Molly Bloom (Jessica Chastain), who went from a wannabe Olympic skier sidelined by freak injury to underground poker syndicate magnate. It’s an improbable yarn where truth is indeed stranger than fiction. Following her slopes related incident, Molly travels to L.A. and soon finds herself as assistant to a rich on paper and sleazy real estate developer (Jeremy Strong). He seems far more concerned with his high stakes poker game that involves celebrities and the West Coast wealthy – all male. Molly starts out basically holding their money. That doesn’t last long as her intellect soon has her running the show.

This puts her in constant contact with an unnamed movie star played by Michael Cera. A quick look at the facts of Bloom’s true events would put Tobey Maguire as the actual actor. Sorkin’s screenplay doesn’t dwell on the famous names that real Molly came in contact with, as apparently the subject’s book this is based on didn’t either. I will say this. If half the stuff about Maguire (err Cera’s character) is accurate, he’s not exactly your friendly neighborhood Spider-Man.

It also puts her in proximity with far worse types than bratty leading men. There’s the Mob, in Italian and Russian form. And that’s where it all gets truly dangerous. These individuals provide a risk to her personal safety, as do the drug fueled measures she takes on her own to keep the business rolling in celebrity, Mafia, and trust fund kid cash.

Molly’s Game is told in flashback as our central figure’s legal troubles mount. Idris Elba is her skilled and sympathetic lawyer. Kevin Costner is her hard charging dad – a therapist who is always seeking perfection from his daughter. It’s their dynamic that turns out to be the key one here and provides a window into Molly’s behavior. In some ways, it’s a relationship we’ve seen countless times onscreen before and this doesn’t add much freshness.

That said, when Sorkin’s writing is at its best, it’s an entertaining sound. Molly’s Game gives us plenty of long exchanges between particularly Chastain and Elba that qualify. We’ve seen the world of closed-door poker (in the solid Rounders for example) before, but not often. The writer/director frequently excels at displaying this fast-paced universe that just a minor segment of the ultra rich are privy to.

Chastain is present in nearly every frame and she provides another electric performance as a strong female getting it done in a male dominated universe. Elba offers sturdy support. Even though Costner’s subplot is the most routine, he adds some depth in the third act as the complicated dad.

Those familiar with Sorkin’s word games will find plenty to enjoy here. It doesn’t rise to the level of The Social Network, mind you. It does comfortably give me confidence that his dialogue works just fine with him also wearing the director’s hat.

*** (out of four)