Retired homicide detective Jon Buehler analyzes the newly released video of a masked, armed subject at Nancy Guthrie's home. #foxnews #willcain #jonbuehler #nancyguthrie #savannahguthrie #tucson #arizona #fbi #kidnapping #surveillance #lacipeterson #crimenews #missingperson #investigations Don’t just watch Fox News—be part of it. Become a Fox News Patriot today. https://youtube.com/foxnews/join Subscribe to Fox News: https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com