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 as "Othello" and out of character for Desdemona. Today, however, the purpose of the passage is sometimes viewed as a depiction of Desdemona's awareness of the way of the world, and her persistence in pursuing the exchanges as a characteristic innocent overconfidence displayed elsewhere in the play (3.3.41–83, 3.4.90ff). On 8 December 1660, Thomas Killigrew's new King's Company acted "Othello" at their Vere Street theatre, with Margaret Hughes as Desdemona – possibly the first time a professional actress appeared on a public stage in England. She played Desdemona in the performance of "Othello" seen by Samuel Pepys on 6 February