Former teacher Chris Dawson attacked his wife beside the pool at their Sydney home and wrestled her in the mud before she disappeared, a court has been told.
On Tuesday, Anna Grantham said she had spoken to co-worker Lynette Dawson about her husband after seeing him angry, agitated and aggressive towards her at a market in 1980 or 1981.
In that alleged conversation, Ms Dawson described how her husband had grabbed her hair and held her face in the mud next to their swimming pool until she was gasping for breath.
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