Brian Laundrie's sister says she hasn't spoken to her parents in two years amid fallout from a new docuseries that reveals text messages between her and her mom that shows them joking about how police let Gabby Petito's killer slip out under their nose before ultimately killing himself in a park nearby.

From a seemingly perfect #vanlife to a haunting disappearance, American Murder: Gabby Petito delves into the chilling actions of Brian Laundrie.

Gabby Petito' unpacks the true story behind the chilling case that captivated the nation almost four years ago.

Brian Laundrie’s sister says that she has no contact with her parents after they stonewalled investigators about the whereabouts of Gabby Petito and her brother. Cassie Laundrie spoke out on her Instagram after she began receiving online hate in the wake of the new docuseries “American Murder: Gabby Petito,

Brian Laundrie's sister, Cassie Laundrie, has spoken out about her estranged relationship with her parents and her lack of involvement in the murder of Gabby Petito.