Giacomo Puccini's opera 'Tosca' might be described as a thriller with political overtones. Set in Rome in 1800 at a time when the Police Chief Scarpia is conducting a reign of terror, it shows its hero and heroine, the singer Floria Tosca and the painter Mario Cavaradossi, caught up in and eventually destroyed by the operations of Scarpia's corrupt regime. The duet ‘E non giungono’ is sung by Tosca and Cavaradossi in the 3rd act at the end of the opera: They are deeply in love and discuss how Cavaradossi should act to credibly simulate his execution.