Ümmü Sıbyan: Zifir (2014)

Facing the pressure of final exams, a group of high school seniors decide to have one last night of fun. They sneak into their school after hours and throw a party in the teachers' lounge, drinking and celebrating. Someone suggests trying to contact Kevser, a former student who died by suicide. What starts as a lark quickly turns dangerous when they succeed. Kevser’s spirit returns, manifesting as Ümmü Sıbyan, a malevolent entity said to haunt pregnant women, fueled by her own inability to have children.