She is 55, her children have long grown up and left, besides, she herself recently retired after serving in the FBI, but a quiet life in a quiet suburb ends for Kate Wise when her friend's daughter is killed in her own house, and she is begged to help with the investigation. Kate seemed that after 30 years of successful service as an agent, she forever left the FBI, where she was respected for her sharp mind, survival skills in the harsh conditions of city streets and her unique ability to track down serial killers. Tired of the quiet city and at a crossroads in life, Kate cannot refuse her friend's request.