Missing Iowa College Student Mollie Tibbetts' Steps Retraced by Detectives

Police investigating the disappearance of an Iowa college student say they are confident they have retraced her steps from the day she went missing. Investigators won't release the timeline they put together for Mollie Tibbetts, who was last seen going for a run in Brooklyn, 60 miles outside of Des Moines. They also know she was dogsitting for her boyfriend that day. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.