Gabrielle “Gabby” Petito was just 22 when she vanished in the summer of 2021. She had set out on what was supposed to be the trip of a lifetime — four months on the road in a converted van with her fiancé, Brian Laundrie. But as the couple’s travels unfolded, cracks began to show. Arguments, troubling encounters with police, and suspicious behavior by Laundrie soon turned a dream adventure into one of the most haunting true crime stories in recent memory.