Oz is an American television drama series created by Tom Fontana. It premiered on July 12, 1997 as the first one-hour crime-drama television series to be produced by premium cable network HBO. The series ran for six seasons, accumulating a total of 56 episodes and concluding with the finale which aired on February 23, 2003.

"Oz" is a shortened form of "Oswald" in depicting the Oswald State Correctional Facility, a fictional, level 4 maximum-security state prison, possibly named after New York's Commissioner of Correctional Services, Russell George Oswald, who, in actuality, was the head of New York's penal system at the time of the Attica Prison riot.

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