Desc: Birk & Magna - Gruvens mørke hemmelighet: Directed by Christer Steffensen. With Filip Kremner, Hermine Svortevik Oen, Bjarte Hjelmeland, Helge Jordal. Magna is seeking answers to her father's mysterious disappearance many years ago. Birk is battling outside forces to save his mountain home. Their quests lead them on a trail of an insidious environmental crime.