In this episode of Lady Killers, Lucy Worsley and Dr Rosalind Crone look back and discuss the first four cases and the issues and themes they share. Together they look again at the alleged poisoners Florence Bravo and Madeleine Smith, who were said to have killed their respective husband and lover. They delve deeper into the story of the American heiress Lizzie Borden, accused of murdering her father and stepmother and discuss the teenage servant, Grace Marks who was jailed for killing her master and his lover in Canada. They analyse the role class and gender may have played in these cases, look at why three out of the four were never found guilty of anything and discover how the choice of murder weapons was seen to reflect their gender and spark a national moral panic. Then Lucy and Ros turn their expertise onto the most important question of all, did they get away with murder? Producer: Alex Baxter Sound design: Chris Maclean A StoryHunter production for BBC Radio 4