After losing sight of each other for 25 years, the paths of three childhood friends cross paths. It concerns successful conductor Victor Slingeland, successful writer Sander Vastenhout and general practitioner Bert Duprez. Slingeland enjoys a reputation as a womanizer. This intrigues Vastenhout who, as is often the case with authors, is without inspiration. Vastenhout sees the unraveling of Slingeland's complex personality as possible new material for a novel. With the help of Dr. Duprez, Vastenhout tries to find out about Slingeland's secret by imitating his behavior and thus challenging him.

Roos Hartman is a young doctor who lives with her son in a large apartment complex. When a fellow tenant is brutally murdered, the police and Hartman's friends suspect her mysterious neighbour, Eric Coenen. As she becomes romantically involved with Coenen, she doubts he would commit such a crime, but soon she begins to investigate the case further and discovers some startling facts relating to his involvement..