The last known sighting of a missing teenager leads investigators to a remote Iowa farm, where photos discovered on an old cell phone reveal critical clues. As law enforcement works to make sense of the evidence, those images help them put the pieces together and determine what happened to 14-year-old Jade Colvin. 48 HOURS correspondent Natalie Morales investigates how the case unfolded and how investigators used the photos to uncover the truth.
