The murder of a personal fitness trainer draws DCI Bill Slider and his team into a baffling investigation where nothing is as it first appears. Fitness trainer Erik Lingoss is found dead in his west London flat, his head smashed by one of his own dumbbells. His heartlessly-dumped girlfriend, blood on her clothes and hands, is the prime suspect. She had means, opportunity, and motive. But is the case as clear-cut as it...