Two of the 1800's worst. Serial killer poisoners Mary Ann Cotton and Thomas Neill Cream. Mary Ann Cotton - WikipediaMary Ann Cotton, The First Serial Killer In British History (allthatsinteresting.com)Mary Ann Cotton – Bio, Personal Life, Family & Cause Of Death - CelebsAges
Thomas Neill Cream - WikipediaThomas Neill Cream: The Serial Killer Doctor Of The Victorian Era (allthatsinteresting.com)The Evil Deeds of Dr. Cream - Canada's History (canadashistory.ca)
