Tom Riddle used a cup owned by Hogwarts founder Helga Hufflepuff to create his third Horcrux. The spell was cast after he murdered Hepzibah Smith. The cup is introduced during the twentieth chapter of Half-Blood Prince and is destroyed by Hermione Granger in the thirty-first chapter of Deathly Hallows. Hepzibah Smith, who owned the cup, was a distant descendant of Helga Hufflepuff. Riddle killed Smith, stole the cup, then framed her house elf for the murder. Voldemort entrusted the cup to Bellatrix Lestrange, who kept it protected in her family's vault at Gringotts Bank, a place that Harry guessed that the once penniless Voldemort would have always coveted a connection to. Additional protective spells, including the Gemino and Flagrante curses, were used to protect the contents of the vault. Harry Potter, Ron Weasley, and Hermione Granger stole the cup after breaking into the bank. Hermione destroyed this Horcrux using a fang from the remains of the basilisk that appears in the Chamber of Secrets.