Handcuffed and in prison greens, Christopher Michael Dawson faces a new charge – this time, unlawful carnal knowledge of a 16-year-old schoolgirl. The charge dates back to 1980, when he was her sports teacher at a Northern Beaches high school.

Dawson denies the charge, and will argue instead they didn't have sex until after her 17th birthday.

We trace this story back to the start, unpack the history of this antiquated-sounding charge, find out what's happening with Dawson's murder appeal, and bring you all the action from Day 1 of this gripping new trial.

To read The Australian's ongoing coverage of the trial, search The Teacher's Accuser or visit theteachersaccuser.com.au.

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The National Sexual Assault Domestic Family Violence Counselling Service can be reached on 1800RESPECT.

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