Audrey examines the ultimately doomed investigation into Helen Puttock’s murder. She tracks down some of those who worked on it, some who knew the man who ran it, and asks whether the hunt for the killer was destined to fail from the start. Writer, Producer and Presenter Audrey Gillan Producer and Story Editor Jack Kibble-White Producers Elizabeth Clark and Victoria McArthur Additional Reporting by Marcello Mega Researchers Molly Higgins, Amanda Johnston and Anna Miles Sound Designer and Composer Joel Cox Editors Heather Kane-Darling and Iona Macritchie Actors Elaine C Smith and Kenny Blyth