Nancy Guthrie has been missing for nearly three months with few leads other than eerie camera footage of a masked man on her doorstep the night of her apparent abduction. As hopes diminish that the ailing 84-year-old will ever be found and that her kidnapper will be brought to justice, a former FBI agent claimed he believes the suspect "will be caught" after making crucial errors. Theories on the Kidnapper's Next Moves A masked suspect was caught on a doorbell camera the night of Nancy's disappearance.