In June 1978, 18-year-old Trudie Adams vanished after a night out at a local dance in Newport, on Sydney's Northern Beaches.

Trudie's disappearance sparked one of the largest missing persons investigations in NSW history, with dozens of reports surfacing of young women being sexually assaulted in the area, yet no one was ever charged over Trudie's case.

In this episode, we revisit the events of that night, and discuss where the investigation is more than four decades later.