Dateline: The Last Day

Investigators discover a blurred image of Mollie Tibbetts jogging followed by a black car.

A witness comes forward to reveal crucial details of murdered U.S airman Nathan Paet’s last day.

Cell phone records help investigators discover what happened to 21-year-old Kelsie Schelling.

Investigators delve into forensic evidence from the scene and mobile data to solve the crime.

Security footage from LaNell Barsock’s last day sends investigators in a new direction.

A weekend of housesitting turns into a deadly nightmare for 16-year-old Cassie Jo Stoddart.

When high schooler Gloria Pointer is attacked and killed on her way to school, investigators retrace every step she took that snowy morning; they finally solve her murder using evidence collected on her last day.

Detectives examine the final days of two female victims at the same university.