'Life on Line: The Last Days of Gabby Petito' is available to stream on Hulu.
After reading reports calling for tips regarding then-missing traveler Gabby Petito's whereabouts, travel blogger Jenn Bethune and her husband reviewed video that captured a white van during their trip to Grand Teton National Park.
"We both got goosebumps all over our body. We knew it was her van as soon as the footage passed by it," Bethune told ABC News. Watch a preview of Bethune's interview on Friday's episode of ABC's "20/20" about the Petito case in the player above.
"Life on Line: The Last Days of Gabby Petito" reports on the horror that unfolded in Wyoming's Grand Teton National Park and the details that lead to the discovery of remains identified as Brian Laundrie, Petito's boyfriend.
Through interviews with Jim Winder -- who is the former Moab, Utah, police chief -- experts on body language, and legal analysts, the show will break down the viral body camera footage from the couple's police stop in Moab days before Petito disappeared.
In addition to travel blogger Bethune, the show includes interviews with:
The episode also discusses calls for attention to similar missing person cases involving people of color and indigenous women who have disappeared in the same area as Petito.
"Life on Line: The Last Days of Gabby Petito" is available to stream on Hulu.