Marat/Sade

Marat/Sade is a movie starring Patrick Magee, Clifford Rose, and Glenda Jackson. In an insane asylum, Marquis de Sade directs Jean Paul Marat's last days through a theater play. The actors are the patients.
In Charenton Asylum, the Marquis de Sade directs a play about Jean Paul Marat's death, using the patients as actors. Based on 'The Persecution and Assassination of Jean-Paul Marat as Performed by the Inmates of the Asylum of Charenton Under the Direction of the Marquis de Sade', a 1963 play by Peter Weiss.