Key Highlights
- Robert Roberson was accused of harming his 2-year-old daughter, Nikki, who suffered severe head injuries in 2002.
- Roberson claimed Nikki fell from bed, but medical professionals suspected abuse.
- The case has drawn attention as experts now question the validity of 'shaken baby' syndrome.
- Many imprisoned caregivers are seeking justice as the science behind their convictions is increasingly challenged.
