| |  | Dr. William Palmer was an English doctor who was convicted of murder in one of the most notorious cases of the 19th century. |  | Thomas Griffiths Wainewright (October 1794 - 17 August 1847), was an English journalist, subject-painter, and serial poisoner born in Chiswick. He... |  | Florence Maybrick was an American citizen who spent fourteen years in prison in England after being convicted of murdering her English husband.... |  | Exili, an Italian chemist and poisoner in the 17th century. His real name was probably Nicolo Egidi or Eggidio. Few authentic details of his life... |  | George Chapman was the English name taken by serial killer Seweryn Antonowicz Kłosowski. He was originally from Poland but later relocated to E... |  | Graham Frederick Young was a British murderer who poisoned a total of three people to death (his stepmother, and then years later two work... |  | Velma Margie Barfield (October 29, 1932 - November 2, 1984) was the first woman in the United States to be executed since 1962. She was also the... | | | Hélène Jegado was a French domestic servant and serial killer. She murdered at least 23 people with arsenic between 1833 and 1841 and in 1851. |  | Anna Marie Hahn (July 7, 1906 - December 7, 1938) was the first woman to die in the electric chair in the State of Ohio and America's first female... |  | Ronald Clark O'Bryan (October 19, 1944 – March 31, 1984) was a murderer from Pasadena, Texas who killed his son Timothy on Halloween, 1974 with cy... | |
