Harry Potter reports Malfoy's suspicious behaviour to a seemingly unconcerned Dumbledore. He reassures Harry that he trusts Severus in keeping a lookout. Soon after, Harry learns from Professor Trelawney that it was Snape who passed a prophecy to Voldemort that ultimately led to James and Lily Potter's deaths. Enraged, Harry confronts Dumbledore, but he affirms Snape's loyalty. Dumbledore, meanwhile, has located another Horcrux and asks Harry to accompany him in retrieving it.