Junk science and a false confession after nine hours of extensive interrogation contributed to the conviction of Melissa Calusinski. In 2009, sixteen-month-old Benjamin Kingan died after being in daycare just outside of Chicago. Despite no physical signs of abuse or injury, police zeroed in on Melissa, an employee at the daycare who was just 22 years old at the time. Clip: 48 Hours correspondent Erin Moriarty recently revisited Melissa's story, revealing new details in a case she's been covering