Set to debut this fall, the film is based on the true story of how Oxenberg first introduced her daughter India (played by Jasper Polish) to the NXIVM sex cult, which was billed as a professional development and leadership group, then saved the young woman from physical and mental abuse.
Twilight franchise actor Peter Facinelli will play Keith Raniere, "the charming and charismatic secret organization leader with devious motives," a press release said.
Secret Girlfriend actress Sara Fletcher will play Keith's accomplice in the cult, Smallville actress Allison Mack.
A New York jury last month found Raniere guilty on seven charges associated with a scheme to lure women into the cult and prevent them from leaving.
He faces life in prison when he is sentenced on Sept. 25.
Mack pleaded guilty in April to racketeering charges related to her involvement with the organization.
She faces up to 40 years behind bars when she is sentenced on Sept 11.
Oxenberg is best known for her portrayal of Amanda Carrington on the 1980s nighttime soap, Dynasty. She also played Leandra Thames on the limited series, Watch Over Me.