Bringing the Sunday Theatre season to a close is the poignant docudrama The Monster of Mangatiti. Featuring Mark Mitchinson (The Hobbit) and newcomer Greta Gregory, the drama details the shocking ordeal endured by teenager Heather Walsh when she was held captive by a sexual predator over the winter of 1985.
When 19-year-old Heather accepted a job as a live-in tutor on a remote and idyllic farm in the Mangatiti Valley, she had no idea that paradise would become a nightmare.
Initially charmed by 52-year-old Bill Cornelius, her stay with the family descended into a cycle of constant rape, beatings and threats of death. Bill controlled what she ate, what she did, who she spoke to and eventually how she thought.
After 20 weeks held captive in the valley, Bill slipped up and Heather was able to make her escape.
Narrated by Heather herself and intercut with her first-person interview, it would take 23 years for her to bring her case to the courts - but justice would be bittersweet.
Tonight, 8.30, TV ONE. Captions and audio description available.