Episode 56 of "Oz"
s06e08 Exeunt Omnes

To sum up the complex finale storylines: Devlin is accused of being involved in the deaths of Mayor Lowen and Glynn, among others. Prior to the pending investigation, he fires McManus from Em City. Querns replaces Glynn as warden and of course plans to make waves. Brass goes completely nuts and tries to kill Jackson Vayhue (now paroled and playing ball again) after Vayhue snubs him. He's arrested and sent away. Father Mukada learns that Hoyt's rich parents adopted him at birth. He was a troubled boy from the start. Mukada tracks down his mother and they share a loving, tender reunion. Hoyt is repentant for past crimes, and tells Mukada where Rev. Cloutier's remains are bricked up. The bikers get payback when Timmy Kirk's mother (who was spurned by Mukada) lets them into the infirmary to kill Jazz. The parole board official tells Miguel he will be a VERY old man before he gets out of Oz. As he is also cut off from Cutler's wife, Miguel slips into the seductive arms and drugs of his cellmate, Torquemada. Rebadow and Stella reunite. Pablo stabs another inmate and goes to the Hole (where the poor prisoner is now stripped naked AND held in a restraining chair). Stella reads to him from outside the door. On the opening night of Macbeth, Keller and Vern plan to kill Beecher. Instead, Keller turns the tables and after a prop knife is replaced with a real knife, Vern is stabbed in the stomach by Beecher. FBI Agent Taylor offers Beecher parole if he helps him find dirt on Keller. Beecher considers accepting the offer, only to run into Keller on Em City's second floor. Keller begs him for another chance as roomies. When Beecher says it's over for good, Keller screams "BEECHER, DON'T!!!" and throws himself off the railing. Beecher is suspected of pushing him, and although the odds of that being proven true are highly unlikely, his parole is still down the drain. Although Gloria tries to comfort him as best she can, Ryan is barely able to cope without Cyril in his life. With his scum father, Seamus, in Em City, he's desperate for payback. Jahfree stabs Seamus after Seamus ambushes him... Jahfree goes to the Hole and Seamus to the infirmary. Seamus begs his only living son for another chance. Surprisingly, Ryan forgives his father for past sins, and they decide to start over. Keller told Beecher that he'd taken care of the Aryans, and those cryptic words come true when a mysterious package arrives at the post office. The contents are a poisonous powder which kills all the Aryans immediately. In Oz's final moments, each section of the prison is evacuated, and every last characters gets on a yellow bus, ready to vanish into TV history. Gone, but never forgotten.