Eighteen-year-old Angelica Brock is found dead at a local beauty spot, dressed in a pure white nightgown, her white-blonde hair arranged around her. For years her death is a mystery, her killer the one who got away for a whole generation of police. For DS Gaby Darin, it's not just any cold case — the victim is intimately linked to someone close to her, and emotions are high. But just as the team finds a breakthrough clue on Angelica's nightdress, another case crashes into the station. Could they be linked? After all this time, can Gaby finally discover what really happened to Angelica?