Anna Newlin, who once lived with the Mans family, defends the Mans family on camera, but then suggests to producers of the show that Natalia was struck with a belt and kicked down a flight of stairs by the Manses. "There's some things that can land [Cynthia] and Antwon in jail for a long time," she says in a voiceover.

The third season of the ID channel docuseries brings to light allegations of financial and physical abuse against Natalia’s new adoptive parents, Antwon and Cynthia Mans; THR reached out to the Indiana Police Department about the allegations.

In the final chapter of Natalia's story, a former adoptive family, the DePauls, attempts to uplift and support Natalia to gain financial and personal independence from the Manses. The twisty documentary series unveils more shocking details about Natalia's former adoptive family in four episodes released on Jan. 7 and 8 on Max.

The Final Chapter takes viewers behind the scenes of Natalia Grace’s rocky relationship with her adoptive parents and her dramatic attempt to escape from the Mans family.

Michael and Kristine Barnett adopted a Ukrainian girl named Natalia Grace, whom they believed to be 6 years old. However, the couple soon began to suspect that she was an adult con artist who wanted to kill them.

“ The Curious Case of Natalia Grace: The Final Chapter ” premieres Monday, Jan. 6, at 9 p.m. ET on Investigation Discovery. Watch the new season for free with a trial from Philo.

The series follows the Barnett family, who initially adopted what they assumed to be a 6-year-old Ukrainian orphan with spondyloepiphyseal dysplasia, a rare bone growth disorder.

Both viewers that have been tracking Natalia Grace's wild life story for years and those who just discovered the messy, drama-filled world of the Ukrainian-born orphan are in for huge twists as the third and final installment of The Curious Case of Natalia Grace drops bombshell after bombshell.