A young girl named Jessica Davis is abducted from a Washington, D.C. area shopping center and eventually found murdered. The BAU are called in when a week later, a second young girl, six-year old Katie Jacobs, is subsequently missing in a shopping center in Potomac Mills, Virgina, the mall which is under lock down. The surveillance cameras show no signs of Katie ever leaving the building. Based on statistics, the BAU have less than an hour to find Katie before her probable murder. Katie was at the mall with her parents, her aunt and uncle, and her thirteen year old cousin Jeremy, under whose watch she was when she went missing. The BAU believe Jeremy saw something before the abduction, but that a feeling of guilt on his part is manifesting itself in acute anxiety and amnesia on the issue. They were at the arcade before she disappeared, the arcade not some place she wanted to be or enjoyed. The case takes a turn when they find a necklace that Katie was wearing. That necklace gives the BAU more information about who they believe to be the unsub, who did not choose Katie as a target randomly.