Buddy(2024)

Original title: Дружок

Karina finds her grandmother's old diary, which contains entries about a woman named Tamara. A few days later, she and her friends discover a strange basement with a mirror and an upside-down cross hanging there. The spirit of the deceased woman, Tamara, possesses one of them in order to take revenge on Karina's grandmother, Svitlana, by killing her.