Bianca (Othello) confirms his wife's infidelity. This "evidence" completes Iago's manufactured case against Desdemona, and thereafter Othello is determined to murder both her and Cassio. In 5.1, Bianca arrives just after Cassio has been stabbed by Iago. She reacts with horror and concern. Iago, pretending to have just entered the scene, accuses Bianca of having been part of the group that attacked Cassio. Iago claims her emotional reaction is due to her being caught rather than concern for Cassio and gets her to admit that Cassio ate at her home earlier that evening. Both Iago and Emilia call her a prostitute, but
Desdemona after Othello violently asks to see it. Desdemona is confused over her husband's behaviour, which culminates in his striking her in public and calling her a whore. Desdemona is deeply upset by her husband's attacks but continues to assert her love. In the final act, Othello tells her that he knows she has been unfaithful, and is going to kill her. Despite Desdemona's claims of innocence, Othello refuses to believe her, and when he tells her that Cassio has been killed, Desdemona cries out. Othello becomes enraged and strangles Desdemona, ignoring her pleas for mercy. When her maid Emilia rushes