 Amid suspicion and accusations, Miss Lu gives Joyce a letter from Norman that Joyce and Wally use to find a diamond necklace.Joyce puts the necklace under her pillow in Norman's room, but after she falls asleep, a hand reaches out from the wall, terrifies her, and takes the necklace.At this point, Joyce is almost out of her mind with fear and confusion, but Wally finds a movable wall panel near her bed and opens a hidden door leading to a secret passageway.