In the pilot episode, we meet the diverse residents of an experimental prison within a prison known as the Emerald City.

Schibetta and the prison brass race to uncover Ortolani's killer--for very different reasons.

The Warden threatens to lock the prison down unless inmate leaders can keep their boys quiet.

Governor Devlin reinstates capital punishment--and the first Oz prisoner scheduled to die is Jefferson Keane.

The effort to find out who's smuggling drugs into prison backfires in a deadly way.

The prison's health service is kept busy by a variety of prisoner complaints.

A recovered Said ostracizes Huseni Mershah for turning his back on him when he was dying.

In the Season One finale, a riot breaks out and sexuality, hate, revenge and racism all rear their ugly heads.