A babysitter who worked for Chris Dawson has told his murder trial the former school teacher made her fear for her life and treated her like a "sex slave" after his wife Lynette vanished 40 years ago.
Mr Dawson, a former school teacher on Sydney's northern beaches and Newtown Jets player, is accused of murdering his wife in January 1982 so he could pursue "a relationship" with the family's 16-year-old babysitter.
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