In an idyllic neighbourhood of Copenhagen, a young woman, Susanne Hansson, is discovered in her apartment bound and gagged, the victim of an extraordinarily brutal rape. Detective Inspector Louise Rick soon learns that Susanne met the rapist on a popular online dating site. Events quickly spiral out of control as a horrified Louise relaises that the rapist is using the website to target specific women. It’s not long before the next assault leads to its victim’s death and Louise finds herself in the middle of a full-blown murder investigation. Undercover and in danger in a world of faceless dating, Louise must try and stop a murderer. But how much is she willing to risk in order to catch a killer?