"Lacey Spears made international headlines in January 2015 when she was charged with the "depraved mind" murder of her five-year-old son Garnett. Prosecutors alleged that the 27-year old mother had poisoned him with high concentrations of salt through hisstomach tube. To the outside world Lacey had seemed like the perfect mother, regularly posting dramatic updates on her son's harrowing medical problems. But in reality, Lacey was a text book case...