Things take a much darker turn for the friends when Albus's brother, Aberforth, becomes aware of their plan. The disagreement leads to a confrontation and Ariana is killed when the three partake in a three-way duel. Unable to face Albus after her death, Gellert flees the country and continues his research about the Deathly Hallows. After discovering the location of the Elder Wand, he travels to Gregorovitch's workshop, stuns him, steals his wand, and therefore becomes the new master. Although not much is told about the rest of his endeavors in the books or movies, in Fantastic Beasts, we learn that he eventually wreaks havoc in America during 1926.
