Ravenclaw's Diadem is the only Horcrux whose killer differs between the books and movies, although the method stays the same. In the books, it is Vincent Crabbe who produced the fiendfyre intended ...

Voldemort's obsession with Hogwarts and the Hogwarts founders meant that he was desperate to find a relic from each founder to turn into a Horcrux. And he eventually did, turning Ravenclaw's lost ...