In 2007, 20-year-old Emma Agnew put a sign up in her car advertising it for sale. A man answered the ad, but he wasn't interested in buying the car. As Stuff senior reporter Martin Van Beynan describes his intentions were far more sinister.

20-year-old Emma Agnew disappeared in November 2007.

Emma and her entire immediate family were deaf and well-known within New Zealand's deaf community.

The alarm was raised almost immediately, but it would be 12 days before her body would be found in forest north of Christchurch.

Go to this episode on rnz.co.nz for more details