Questions emerge about the way in which a suspect in Helen Puttock’s murder was eliminated, and Audrey revisits the crime scene to explore a lead that was never fully investigated.

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