And he eventually did, turning Ravenclaw's lost diadem into his fifth Horcrux. But what was Helena Ravenclaw's connection to Voldemort's Horcruxes, and why was she recast? Helena Ravenclaw was not ...

Voldemort's arrogance leads to less protection surrounding later Horcruxes, with Ravenclaw's diadem just left at Hogwarts. The villain has a strong personal connection to Marvolo's ring ...