A woman chemist helps wives dispatch their plutocratic husbands. In 2013, Pulitzer Prize-winning journalist Deborah Blum wrote an article for Wired magazine titled "The Imperfect Myth of the Female Poisoner" that dispelled the persistent cultural assumption that, as far as murder methods go, homicides-by-poisoning are inherently ladylike. "It's not, you see, that poison is a woman's weapo…