To her fans, YouTuber Gabby Petito's life seemed perfect. With her fiancé Brian, she lived the travellers life, hopping from place to place in their camper van. But alarm bells begin to ring when Brian returns home alone. Where has Gabby gone? And, why is Brian so unwilling to talk? This one-hour special chronicles the twists and turns of the tragic road trip through the lens of Gabby's social media presence. Told by both the people who knew her best and a community of online strangers who ended up banding together to ultimately solve this shocking homicide. Two timelines were unfolding in the Gabby Petito story -a private one and a very public one.