Act 3 Scene 4
Desdemona frantically searches for her handkerchief. Othello, in an attempt to catch her out, demands to see it. Angered when she cannot produce it, he storms away. Emilia and Desdemona observe how much he has changed. Cassio asks Desdemona again to help him regain Othello’s trust, and she promises she will do everything she can. Having found Desdemona’s handkerchief in his room (where Iago planted it), Cassio asks his mistress, Bianca, to embroider another like it.