The scene shifts to the Petrella Castle in the Apulian Apennines. Olimpio and Marzio enter Cenci's bedchamber to murder him, but hesitate to kill the sleeping Count and return to the conspirators with the deed undone. Threatening to kill Cenci herself, Beatrice shames the servants into action, and Olimpio and Marzio strangle the Count and throw his body out of the room off the balcony, where it is entangled in a pine. Shortly thereafter, Savella, a papal legate, arrives with a murder charge and execution order against Cenci. Upon finding the Count's dead body, the legate arrests the conspirators, with the exception of Orsino, who escapes in disguise.