The screenplay is based on the short story "So much water so close to home" by American writer Raymond Carver. The song "Everything's Turning to White" by Australian singer-songwriter Paul Kelly was also inspired by Carver's story.
The 'P' plate that is taken by the murderer from the young girl's concealed vehicle, is one of Australia's provisional licence placards. A person who has just got their licence is on P plates for 3 years and have certain restrictions.