The daily lives of prisoners in Emerald City, an experimental unit of the Oswald Maximum Security Prison where ingroups - Muslims, Latinos, Italians, Aryans - stick close to their mutual friends and terrorize their mutual enemies.
Oz is in upheaval following the return of Martin Querns. Meanwhile, Howell and Robson each receive troubling news, Mukada answers an unsolved mystery, and the O'Reilys struggle to make amends. Finally, the prison production of 'Macbeth' ends with a staggering final act.
