DATELINE SATURDAY NIGHT MYSTERY SNEAK PEEK: The Informant
00:50
Copied
Dennis Murphy reports on the mysterious story of Heidi Allen, an 18-year-old college student and convenience store clerk in Oswego County, NY, who goes missing in broad daylight on Easter Sunday. Airs Saturday, September 2 at 10/9c on NBC.Aug. 28, 2017
