Sixteen famous Australian-NewZealand cases are covered here: motherly Caroline Grills, the first woman in the world to commit mass murder with thallium; the amazing case of Eugene Falleni, the woman who murdered her wife; the beautiful Jean Lee, who helped in the vicious slaying of an elderly man; Morris Brewer, to whom there was only black or white, the truth, the whole truth and nothing but the truth – and whose mind, broken by an excess of virtue, was hanged for the killing of his fiancee. All these and many more cases which pose the perennial question:  why did they do it? Illustrated with black and white photographs.