She managed to bite her way through the ropes around her wrists and flee, having the presence of mind to make a note of his registration number.
Under questioning, Monique Olivier confessed, apparently fearing she would face a conviction similar to the 30-year sentence handed down to the spouse of Belgian paedophile and murderer Marc Dutroux.
Indeed the French court later ruled that she must serve at least 28 years of her life sentence, after being found guilty of acting as her husband's accomplice in five of the murders.
Fourniret - who is described as of above average intelligence - was unco-operative during his two-month trial.
He unsuccessfully tried to have the media and press removed from the courtroom and often refused to speak, passing secret notes to his lawyers and the judge.
Fourniret still denies having committed any crime between 1990 and 2000 but is suspected of being involved in the murder of a Leeds university student, Joanna Parish, who disappeared in Burgundy in 1990.
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