In late July 1843, the colony of Upper Canada was stunned with the news of a bloody double-murder.  Thomas Kinnear had been shot and Nancy Montgomery – his housekeeper and pregnant mistress – had been strangled and dismembered.  The two people accused of the murders were Kinnear’s Irish servants: James McDermott and the teenager, Grace Marks.  Grace’s story has since become one of the most famous fictionalised episodes from nineteenth century Canada, but what was the real Grace like?