(NBC News) — Thursday, on a brand-new “Dateline,” after nurse and mother-of-three Becky Bliefnick is found fatally shot inside her Illinois home, investigators uncover security camera footage that could be key to solving the case.

Here is a preview of Dennis Murphy’s report:

A winter’s night. A cyclist pedals down deserted streets.

The clickety-clack of gears grinding, the whir of a tire on pavement — the only sounds to pierce the silence in this small town.

Security cameras — lonely sentinels in the dark of night, capture fleeting images of this ghostly rider.

Who was it? Where were they going on that February night, and to what end?

Watch “Dateline: Ghost Rider” Thursday at 10 p.m. on NBC4.

About ‘Dateline’

“Dateline NBC” is the longest-running series in NBC primetime history and is in its 32nd season. Dateline is anchored by Lester Holt and features correspondents Andrea Canning, Josh Mankiewicz, Keith Morrison and Dennis Murphy.

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.