Neighbours describe one night where there were loud voices coming from the apartment of Cynthia Grierson Jackson and her husband, Michael.
Otherwise, there was nothing to suggest the grisly scene police would discover a couple of days later.
Scott Bainbridge wrote about the disappearance of Cynthia Grierson Jackson in his book Without A Trace. Photo: Supplied
Scott Bainbridge, author of Without a Trace, investigated the disappearance of Cynthia Grierson Jackson and police discovered Michael Grierson Jackson died of blood loss after castrating himself.
His wife has never been found.
The only lead police had is that days before his death, Michael returned Cynthia's uniform to her workplace and told her colleagues she had left him.
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