Marianne is unhappily married with the rich Arvid Croneman. Arvid has been ill for some time and Marianne has been looking forward to his passing away. However, Arvid recovers. Marianne has had an affair with Lennart Hägg, her husband's doctor. She steals poison from his office and makes sure that her husband gets a poisonous injection that swiftly kills him. After his burial, Arvid's relatives, who lives in the house, treats her with suspicion. Has she really gotten rid of all the evidence?
Harriet Andersson
as Marianne Croneman
Ulf Palme
as Arvid Croneman
Erik Strandmark
as The doctor
Sture Ström
as Hans Lundin
Renée Björling
as Arvids mother
Georg Funkquist
as Jörgen Bengtsson
Siv Ericks
as Arvids sister
Curt Masreliez
as Curt
Mona Malm
as Anita
Tekla Sjöblom
as Mrs. Olsson
Wiktor Andersson
as Mr. Olsson
Birgitta Andersson
as Anna Högman
