The police officer Sabrina has been given a special assignment : She is to investigate undercover in an orphanage run by nuns and meets Tom, an attractive architect . Several attacks on the matron were carried out in the orphanage . Sabrina begins her investigation and posesamazed that she and the architect went to the same boarding school together . But why did he pose under a false name ? Sabrina wonders why Tom lied to the nuns to gain their trust . She finds out that he is looking for his motherput him up for adoption as a baby . He suspects that it is the matron .