A man is found dead in his own home, locked in a closet. His body is crawling with poisonous spiders, and the Boston police just shrug their shoulders. All the clues lead to a dead end, and everyone fears that the killer is about to strike again. The cops have no choice but to turn to the world's most brilliant homicide detective, Avery Black. Having left the service, Avery is going through a difficult period in her life when she is suddenly called back to work. She reluctantly agrees, but when other bodies begin to appear, which were dealt with in a rather sophisticated way, Black asks the logical question: is there really a serial killer walking around the city? Under pressure from the press and the stress of being given a new, inexperienced partner, Avery pushes herself to the limit, trying to solve an unusual case without going crazy. Black realizes that she is penetrating deeper and deeper into the fevered brain of a maniac, where many more secrets are hidden than she could ever imagine. MOTIVE FOR FEAR - the most exciting and shocking Book #6 of the Avery Black Mystery series, a psychological thriller that will keep you on the edge of your seat until the end, keeping you turning pages late into the night.