Book Description: Nikki Heat and Jameson Rook team up again to investigate their coldest killer yet, in Richard Castle's exciting follow-up to the number one New York Times bestseller Heat Rises. NYPD Homicide Detective Nikki Heat gets more mystery than she imagined when she arrives at her latest crime scene. The body of an unidentified woman has been found stabbed to death and stuffed inside a suitcase left sitting in a freezer truck. A startling enough death--but an even bigger shock comes when this new homicide surprisingly connects to the unsolved murder of Detective Heat's own mother. Killed gruesomely, the Jane Doe on ice launches Heat on a dangerous and emotional investigation, rekindling the cold case that has haunted her since she was nineteen. Paired once again with her romantic and investigative partner, top journalist Jameson Rook, Heat works to solve the mystery of the body in the suitcase while she also digs into unexplored areas of her mother's background--areas Nikki has been afraid to confront before, but now must.