The story of Mary Ann Cotton: A frail dressmaker’s poisonous past
	3:33pm Thu 20 Sep 07
	IN recent years, Dr Harold Shipman was convicted of murdering 15 patients and suspected of killing more than 200 people. The 19th Century had its own serial killer, Mary Ann Cotton, who murdered four husbands, a lover, and several children. Former Watford detective PAUL HESLOP investigates.