(NBC NEWS) —  On Friday’s Dateline, Florida detectives search for Marie Carlson after she disappears suddenly, leaving her newborn in the care of her local pastor and his wife.

Here is a preview of Keith Morrison’s report:

Marie had found a spiritual home at The Calvary Emerald Coast Church. The pastor was a charismatic man named James Flanders, who preached the bible, four square. Preached in jeans and sneakers.

But more than that, the pastor and his wife, James and Tanya Flanders, were known for their big hearts —their charity.

And that’s when, for a third time, a family took in Marie. But a whole year went by and in July 2011, Marie gave birth to a baby girl. And named her Grace.

The pastor and his wife took care of both of them. And then? Imagine the surprise when a mass text popped up on all the phones of her family and friends.

But the biggest surprise? Marie did not take her 3-month-old baby.

Watch Friday’s “Dateline: Secrets on the Emerald Coast” on NBC at 10 p.m.

About ‘Dateline

“Dateline NBC” is the longest-running series in NBC primetime history and is in its 30th season. Dateline is anchored by Lester Holt and features correspondents Andrea Canning, Josh Mankiewicz, Natalie Morales, Keith Morrison and Dennis Murphy.

Dateline is the #1 Friday newsmagazine and reaches more than 17 million people every week through its broadcast, and millions more through its social media platforms and podcasts.

The stories range from compelling mysteries to powerful documentaries and in-depth investigations. When major news breaks, they go to the scene, putting the pieces together to bring the viewer the full picture. And in every story they tell, they help the real people who lived the events share their journeys with the viewer.