Iago and Roderigo hang out, waiting for Cassio. Roderigo tries to stab Cassio, fails, gets stabbed himself, and looks to be in trouble until Iago sneaks up and stabs Cassio in the leg. Two Venetian gentlemen run in at the sound of Cassio's screaming. Iago pretends he just stumbled in himself, declares Roderigo to be the assailant, and stabs Roderigo to death before the man can claim otherwise. Bianca runs in and screams a bit, and Iago tries to pin the mess on her. Emilia enters and Iago weaves her a lying tale. He instructs her to tell Othello and his wife about the news.