Mother Superior (Mater Superior) had its international première at the Brooklyn Horror Film Festival 2022 Elderly Baroness Helene von Heidenreich (Inge Maux) has been found dead in Rosenkreuz Manor, her remote woodland home in Lower Austria, with burn marks suggestive of an electric shock. As the prime suspect, Heidenreich’s young nurse Sigrun Fink (Isabella Händler)…