After tackling sex, death and mobsters, HBO is moving on to marriage.

The cable network says it has hired NYPD Blue creator Steven Bochco to produce a new series -- called Marriage -- to debut in 2004.

The 13-episode series will chronicle a relatively young marriage -- only five or six years old -- and everything that goes into making it a failure or a success.

The series will be set in Manhattan, with "the entire action of the series taking place in the bedroom, bathroom and closet," according to a press release.

Bochco has been instrumental in pushing out the borders for language and nudity on TV and has been vocal about making network dramas more adult. On HBO, he will have not have those restrictions.

Alison Cross, who wrote the Emmy-winning movie Serving in Silence: The Margarethe Cammermeyer Story, will write and executive-produce the new series along with Bochco.

"It will be exciting to see what such a uniquely talented individual [Bochco] will do within the HBO production environment," said HBO chairman/CEO Chris Albrecht.

Bocho said he's been talking to HBO about Marriage for about three years.

"This is a series that couldn't be done properly anywhere but HBO," he said.

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