A sister of Lisa Willis, Amanda Jane Cousins, said Mick Philpott blamed her for the breakdown of his relationship with Miss Willis.
The jury heard that Mr Philpott had threatened her and was alleged to have told her to watch her back because he would 'have her done over' in a nightclub.
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Speaking exclusively to ITV News, Dawn Bestwick said jail wasn't good enough for MIck Philpott and that "as a coward" he "deserved to die".
The events that eventually led to parents Mick and Mairead Philpott and friend Paul Mosley's conviction of manslaughter.