In May of 2013, 36-year-old Army veteran Maribel Ramos disappears from her Orange, California, apartment without a trace. Suspecting foul play, investigators devise a unique surveillance strategy to track her down and uncover some disturbing evidence.

In Farmville, North Carolina, three family members working at a convenience store fall victim to the most cold-blooded crime the town has ever seen; detectives attempt to pick up the killers' video trail and put an end to their bloody spree.