A wife finds her life transformed after a torrid affair in this story of murder. Katia is a rather dull young woman who types manuscripts for Irina, her husband's mother and successful writer of romance novels. Katia's husband is a real momma's boy. They go to Irina's summer house to work. There Katia encounters the intense and sexy Serguei who creates passionate longings with in her. Overcome she and Serguei engage in vigorous love-making upon a windowsill where Irina sees them. Irina has a weak heart. Quiet Katia, having rediscovered the joys of sex, changes and becomes more assertive and flighty. Serguei quickly loses interest in her. Strange and deadly things begin happening at the summer house which calls the attention of a judge who is extremely familiar with Irina's writing.