2.哈利波特與密室
Harry Potter and the Chamber of Secrets, 2002
灌下變身魔藥偽裝成馬爾福好友的樣子,刺探除了馬爾福不是斯萊特林后代的情報。雖然其實赫敏一不小心變成了貓……
The trio brew a Polyjuice Potion which makes them appear to be Malfoy's friends in order for them to discover that Malfoy is not the Heir of Slytherin.