Could Rebekah Baptiste's murder have been prevented?

Long before the Rebekah Baptiste was killed, administrators at her school in Phoenix said they called the state 13 times. They said the 10-year-old and her two younger brothers showed signs of abuse and neglect at the hands of their father and his girlfriend. Phoenix Police confirmed their officers also called. So why didn't the state agency tasked with protecting children intervene? We take a closer look at the case. 

On Arizona's Family Investigates, 3TV and CBS 5 reporters examine the top stories, key cases, and critical developments around Arizona in depth.