Jag dräpte (1943)

Dr Cornell and his wife Liv have been married for five years. During a party at their home he overhears an argument between his wife and an unknown man with whom she once had a relationship. A short time later the man is admitted to the hospital, and on the operating table Dr Cornell realizes who the man is. He finishes the operation without quite knowing how, and when the man dies a short while later in an unrelated illness, the doctor blame himself for the man's death.