The successful businesswoman Yvonne Gerstrand developed an unusual hobby: in the evenings she went to the suburbs and walked along the streets between the cottages, peeping through the windows at people. Soon she knew a lot about every family in this village, and only the lives of the inhabitants of house number 9 on Orchid Street remained a secret for Yvonne. Having accidentally noticed an advertisement that the owner of this house, Bernhard Ekberg, needed an au pair, Yvonne, unexpectedly for herself, called and, introducing herself as Nora Brik, offered her services. Twice a week Yvonne visited Ekberg’s house, becoming more and more involved in the owner’s life, until the terrible secret of his family was revealed to her...