When Mack did convince women to join the group, she allegedly lead ceremonies during which the women were branded with a symbol that, "unbeknownst to them", included Raniere's initials.
U.S. Attorney Moira Penza stated in court that Mack was one of the top members of the sex cult disguised as a female empowerment group.
After Raniere's arrest last month, Clare Bronfman, a billionaire philanthropist and board member of Executive Success Programs, a company under Nxivm, said there had been "many defamatory accusations made and I have taken them seriously". She pleaded not guilty to sex trafficking later that day.
She appeared in court in a green jail suit and kept her hands held behind her back.
In a statement Friday, U.S. Attorney Richard P. Donoghue said that Mack recruited women for Raniere, and that the women were "exploited, both sexually and for their labor".
'Allison Mack appeared this afternoon in Brooklyn Federal Court before United States Magistrate Judge Viktor Pohorelsky, ' a spokesperson for the U.S. Attorney's Office for the Eastern District of NY told E! According to Page Six, Mack was a "slave" to Raniere, but was a "master" to other slaves.
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Prosecutors said women were coerced into taking sexual photos and making embarrassing confessions on video, which would then be used to blackmail the "slaves" into performing acts ranging from getting coffee and cleaning to having sex with Raniere.
Actress Allison Mack walked out of Brooklyn federal court after posting a $5 million bond and agreeing to stay under house arrest in California.
Raniere also denies wrongdoing.
The speculation is that Allison is cutting a plea eal with the prosecution of this case to provide information against NXIVM cult leader Keith Raniere.
If convicted of the charges, Mack and Raniere each face a minimum of 15 years and up to life in prison.
Catherine Oxenberg, who once starred on "Dynasty", has a connection to the group that began when she attended a meeting with her daughter several years ago.