After being questioned by Othello, Emilia is sent to get Desdemona so Othello can get a confession out of her and see if she is cheating on him. Othello then sends Emilia to guard the door as he questions Desdemona.
Othello confronts Desdemona and tries to get a confession out of her. He confidently says that Desdemona is being unfaithful and waits for her to state that it is the truth.
Desdemona kneels before Othello and denies being unfaithful. Othello disagrees and declares her a whore.