Josefin Asplund plays the double role of twin sisters Siri and Helena who have been separated as children, because of their conflicting differences. When Helena several years later receives an invitation from Siri to visit her at the beautiful Himmelstal sanatorium in the Alps, her stay rapidly turns into a nightmare when she realises that Siri has disappeared and the sanatorium is in fact a research clinic doing experiments on psychopaths. As staff believes she is the manipulative, violent Siri, Helena has to change behaviour to survive.
(Nordisk Film & TV Fond)