Latin teacher Birger Sjögren at Ringsala boarding school threatens his possesive and chronically ill mother that he will get married. She gets a stroke and dies. Sjögren is affected by feelings of guilt, envy and hatred towards the surroundings. A series of mysterious fires have taken place around the school the last few months. One of the students has seen Sjögren setting fire to a barn. But can he convince the trusted biology teacher Nordmark, expert of the criminal mind?
Edvin Adolphson
Rolf Nordmark
Stig Järrel
Birger Sjögren
Inga Tidblad
Eva Sjögren
Hugo Björne
Edvard Bergfelt
Linnéa Hillberg
Magda Bergfelt
Hasse Ekman
Per Sahlén
Agneta Lagerfeldt
Anne-Marie Ström
Hilda Borgström
Anna Charlotta Sjögren
Mimi Pollak
Miss Danielsson
Bengt Ekerot
Åke Kronström
Åke Claesson
Dr Lundvall
David Erikson
Andersson - School Janitor
Karl Erik Flens
Telephone Operator's Fiancé
Agda Helin
Dr Lundvall's maid
Aurore Palmgren
Hulda
