It transpires that Mr. Harvey organised the trip to coincide with the 21st anniversary of his last trip to the cathedral, the day when he proposed to the woman who became his wife. He carries in his wallet a fading photo of the very moment when they got engaged. One of the boys steals his wallet. Helen takes the photo from the wallet, defaces the photo and passes it around the coach for the other pupils to see, to their amusement. Mr. Harvey suspects that one of the pupils had stolen his wallet, but doesn't know who, and confronts Helen, grabbing her and revealing her cut wrists.
