Jan-Erik Widgren meets the lonely Bertha Olsson, a woman struggling with alcoholism. Though Bertha is already linked to Caligula, Jan-Erik's heartless teacher, she begins a relationship with the boy anyway. When Caligula learns that Jan-Erik is having an affair with Bertha, he begins to torture his student psychologically. He reserves his cruelest behavior for Bertha, however, which results in a tragic turn of events.
Stig Järrel
as Caligula
Alf Kjellin
as Jan-Erik Widgren
Mai Zetterling
as Bertha Olsson
Olof Winnerstrand
as Headmaster
Gösta Cederlund
as Pippi
Hugo Björne
as Dr. Nilsson
Olav Riégo
as Mr. Widgren
Märta Arbin
as Mrs. Widgren
Jan Molander
as Pettersson
Gunnar Björnstrand
as Teacher
Birger Malmsten
as Kreutz, student
Stig Olin
as Sandman, student
