Catherine Birnie
...that the insanity of Australian serial killer Catherine Birnie is believed to have been caused by the death of her son?
...that the insanity of <a href="./Australia" id="mwBlY" rel="mw:WikiLink" title="Australia">Australian</a> <a href="./Serial_killer" id="mwBlc" rel="mw:WikiLink" title="Serial killer">serial killer</a> <b id="mwBlg"><a href="./David_and_Catherine_Birnie" id="mwBlk" rel="mw:WikiLink" title="David and Catherine Birnie">Catherine Birnie</a></b> is believed to have been caused by the death of her son?