While 12 Years A Slave director Steve McQueen’s HBO series will be headlined by a newcomer, the network has signed two major stars for big parts in the series. Helena Bonham Carter and Rebecca Hall are both onboard.

Codes of Conduct, which McQueen has been working on since last year, will star Devon Terrell as a young African American man named Beverly Snow, who climbs the ranks of New York’s high society while hiding from his past.

Variety reports that Bonham Carter will play a divorced mother with two boys whose life changes when she meets Snow. Hall is set to play the eldest child of a billionaire who becomes Snow’s major rival.

There Will Be Blood actor Paul Dano also has a part in the pilot, which McQueen will direct. McQueen is writing with Matthew Michael Carnahan.

Bonham Carter can be seen in Disney’s Cinderella in March. Hall was recently seen opposite Johnny Depp in Transcendence and in Iron Man 3.

As for McQueen, he was nominated for the Best Director Oscar for 12 Years A Slave, but he still won the Oscar for Best Picture as a producer on the film. Among his next projects is expected to be a movie version of the U.K. series Widows and a movie about Paul Robeson.

image of Rebecca Hall courtesy of Peter West/ACE/INFphoto.com