Karen McCarron was convicted in Illinois after suffocating her three-year-old daughter, Katie, with a plastic bag in May 2006, then buying ice cream before returning to remove evidence, according to court records and trial testimony.
The killing took place at McCarron's parents' home in Morton, central Illinois. The child had autism. McCarron later told investigators she believed she could somehow 'fix' her daughter, according to a videotaped statement shown in court.