While Harry was on holidays during the summer of 1992, he was ordered to stay inside his bedroom because the Dursleys had some important visitors: Mr and Mrs .Mason. Harry was told to remain in his bedroom and make no noise whatsoever.[4] This proved difficult however, because, upon entering his room, Harry discovered Dobby the house-elf waiting for him on his bed. Dobby was there to warn Harry implicitly of Tom Riddle and Lucius Malfoy's, plot involving the Chamber of Secrets and Voldemort's eventual return by telling not to return. Dobby punished himself several times during his visit, he was so loud that Vernon Dursley came into the room to see what was going on. At that point, Harry promptly hid Dobby in his wardrobe. Because Harry refused to promise to not return to Hogwarts, Dobby levitated the dessert Petunia Dursley had made and dropped it, making it crash on the floor. (an incident blamed on Harry Potter though it was truly Dobby's fault). The evening could have been rescued were it not for the barn owl that flew through the open window and dropped a letter on Mrs Mason's head. Due to her extreme fear of birds she "screamed like a banshee", sat up quickly and ran from the house, followed quickly by her husband.[5]