After discovering a body in the frozen Charles River, Boston police decide to call in their most brilliant, if controversial, homicide detective, Avery Black. It doesn't take her long to realize that this is not just an ordinary murder, but the work of a serial killer. Over time, other bodies emerge that clearly have something in common: they all fall into a trap of ice. Coincidence? Or is it the handwriting of a very angry killer? Under growing pressure from the media and superiors, Avery struggles to understand an illogical act that even to her seems too strange and inexplicable. At the same time, she has to contain her own depression, since her personal life has again fallen to its lowest point. And she has to struggle with all this, trying to penetrate the mind of a mentally ill and elusive killer. What Black has to face will shock even herself and make her understand that emptiness is just emptiness, and darkness sometimes comes closest to us. An intriguing psychological thriller A MOTIVE TO FEAR is book #4 in the thrilling Avery Black Mystery series, featuring a beloved character that will keep you turning pages late into the night.