‘My mother saved me. She knew she was dying. She persuaded my father to rescue me as a last favour to her. He loved her as he had never loved me. He agreed. They came to visit me. They gave me a draught of Polyjuice Potion, containing one of my mother’s hairs. She took a draught of Polyjuice Potion, containing one of my hairs. We took on each other’s appearance.’

