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?
as Rolf Nordmark
as Birger Sjögren
as Eva Sjögren
as Edvard Bergfelt
as Magda Bergfelt
as Per Sahlén
as Anne-Marie Ström
as Anna Charlotta Sjögren
as Miss Danielsson
as Åke Kronström
as Dr Lundvall
as Andersson - School Janitor
as Telephone Operator's Fiancé
as Dr Lundvall's maid
as Hulda
as Samuelsson
as Student
as Student
as Principal Bergfelt's maid
