The 20th-century like the previous centuries has seen no end of murders by women with poison as their choice of weapon. And, like the previous centuries the murders have been just as cold and calculating. Why do women prefer to murder with poison? It avoids physical confrontation. It is cleaner than the ugly bloodied scenes of guns or knives. And they believe it is a method that will allow them to get away with murder. Those lucky few, who have managed...