Act 5, Scene 1

When Iago enters, he pretends that he knows nothing of the scuffle; Gratiano and Lodovico also stumble upon the scene, having no idea what has happened. Roderigo is still alive, so Iago feigns a quarrel, and finishes him off. Bianca comes by, and sees Cassio wounded; Iago makes some remark to implicate her; Cassio is carried away, and Roderigo is already dead.