When does The Disappearance of Gabby Petito return?

Gabrielle Venora Petito, 22, was killed by fiancé Brian Christopher Laundrie in August 2021. Petito's remains were found in Wyoming's Bridger–Teton National Forest on September 19, 2021. The case gained widespread attention due to the couple's documenting of their travels on social media. The FBI later announced that he had admitted to killing Petito in his notebook, which was found near his remains.