A Lifetime film based on the disappearance and death of Gabby Petito will premiere Oct. 1, the start of Domestic Violence Awareness Month. "The Gabby Petito Story" will star Skyler Samuels as Petito and Evan Hall as Brian Laundrie. The film, timed to the one-year disappearance of Petito, is part of the network’s "Stop Violence Against Women" initiative.