 When Sciarrha tells his sister that he plans to kill the Duke, Amidea prevails upon him to let her deal with their problem.The Duke comes to Amidea's apartments, not realizing that Sciarrha is hidden behind the arras of her bedchamber.Amidea tries to appeal to the Duke, but he is determined to have her; before he can force her to submit, Amidea draws a poniard, wounds her own arm, and threatens to kill herself.