Гняв 4: Старицата в бяло - The Grudge: Old Lady in White 2009

At a certain house, a son brutally and methodically murders all five of his family members after failing the bar exam. He then hangs himself, leaving behind a cassette recorder at the scene on which he can be heard saying, Go Go now, in unison with a strange female voice. That voice belongs to a victim of the family massacre, the elementary school best friend of teenager Akane (Minami).