Gabby Petito's story shines a light on domestic violence. Could her death have been prevented?

In the late summer of 2021, the story of 22-year-old Gabby Petito's disappearance spread quickly across social media and throughout the media. Headlines put a spotlight on the missing 22-year-old "van life'" video blogger, and on her fiancé, Brian Laundrie, who had returned home to Florida without her. Gabby's body was eventually found near a Wyoming campground, and a month later, Brian's remains were discovered in a Florida nature reserve. In a notebook found near Brian, he claimed responsibility for Gabby's death.

Now "48 Hours" investigates if Gabby's death could have been prevented in: "Gabby Petito: The Untold Story" to air Saturday, September 17 at 9/8c and streaming on Paramount +. CBS News national correspondent Jericka Duncan, takes a deeper look into the life and death of Gabby Petito, and the steps that her parents have taken to seek justice on behalf of their daughter.

When Gabby was missing, police bodycam video was released of an interaction that the couple had with officers from the Moab City Police Department in Utah, just a few weeks earlier. The video shows Gabby crying and visibly upset after an altercation with Laundrie. The officers were responding to a 911 call about a potential domestic violence incident, where the caller reported seeing Brian slap Gabby, then hit her.