In the midst of Pope Francis' historic visit, a new Fox News Reporting special will examine faith in America and cover the pontiff's message to the faithful.

As Francis meets the adoring throngs, Christianity finds itself at a crossroads. Church attendance has been going down for decades, and fewer and fewer people identify as Christian. 

Will this troubling trend continue, or is there hope? And what's behind the decline?

The Fox News investigation uncovered pockets of inspiration throughout the country that may point to the future. These include a thriving Christian church with services held in Arabic, another popular church built on a rock and a rock show, as well as an up-and-coming order of nuns who have succeeded by changing their habits.

Watch a preview clip above and see Bill Hemmer talk about the must-see special on "Outnumbered Overtime." (The discussion starts after about a minute.)

Don't miss "Fox News Reporting – Losing Faith in America?" - hosted by Bill Hemmer - Friday at 10p/1a ET, Saturday at 10p ET and Sunday at 9p ET on Fox News Channel.