Mega-bestselling British crime novelist Cara Hunter makes her big American debut with a shocking thriller about a cold case, a fictional Netflix true crime series, and the family caught in the middle. SIX EPISODES. ONE KILLER. It was a case that gripped the nation. In December 2003, Luke Ryder, the stepfather of acclaimed filmmaker Guy Howard (then aged 10), was found dead in the garden of their suburban family home. Luke Ryder's murder has never been solved. Guy Howard's mother and two half- sisters were in the house at the time of the murder?but all swear they saw nothing. Despite a high-profile police investigation and endless media attention, no suspect was ever charged.