A father plotted to slaughter his two teenage children in a horrific "premeditated" plan that saw him stalk his 13-year-old daughter home from school.
John Edwards had a history of horrific domestic violence against his family - including ex-wife Olga, mother of his two children Jack and Jennifer, an inquest heard.
The killer dad's children were said to be frightened of him and were living under an address not known to their violent father.
However, a Sydney court heard Edward had likely hired a private investigator to find out Jennifer's school routine before waiting for her to get off a train and following her home on July 5, 2018.
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