Prosecutors charge Damien O'Brien and Jessica O'Brien with second-degree murder, child abuse and torture after their seven-year-old son, Casper O'Brien, dies from heart failure linked to extreme neglect and morbid obesity.Medical exams show Casper weighed about 255 lbs at four-feet-two inches tall with dilated cardiomyopathy after his weight rose from roughly 104 lbs in under two years while subsisting on potato chips, French fries, apple juice and carbonated water.Authorities describe the Flint Township home as a severe hoarder environment with layers of filth, a broken toilet filled with human waste, four neglected dogs and unsanitary conditions; the couple's five-year-old daughter is in Child Protective Services custody and is medically obese and neglected.The O'Briens are jailed without bond, face life sentences if convicted and investigators and advocates question why schools, health providers and social services did not intervene earlier.