The Teacher's Pet is an Australian true crime series that centres on the disappearance and suspected murder of Sydney woman Lyn Dawson in 1982.
The show has uncovered new evidence and witnesses to the events leading up her disappearance over its 13 episodes (and counting).
Although this 36-year-old cold case remains unsolved, the investigation has led the New South Wales Police to look into historic claims of sexual abuse by teachers at a local high school.
Made by news and media company The Australian, and hosted by its national chief correspondent Hedley Thomas, the show's also proving to be a big commercial success, having just passed 4 million downloads and been at Number 1 of the iTunes charts in Australia in just about every week since it launched in May.
We play some of Episode 3 of 'The Teacher's Pet' in which Hedley Thomas manages to get the chief suspect in the case on the phone.