Mack, who is best known for her role as Clark Kent’s friend in the television series “Smallville,” was one of six defendants in a federal racketeering indictment filed last year against members of Nxivm.
Mack, who appeared Monday at the U.S. District Court for the Eastern District, in Brooklyn, previously pleaded not guilty on charges including sex trafficking and conspiracy to commit sex trafficking and forced labor. She had been released on $5 million bail.
Some women in the organization, which was based near Albany, were branded with the initials of Nxivm’s former leader, Keith Raniere, and forced to have sex with him, federal prosecutors have said.
Federal prosecutors have said that Mack helped recruit women into Nxivm (pronounced Nex-ee-um), telling them they were going to become members in a female mentorship group.
The actress, the indictment said, was part of Raniere’s “inner circle” and was also one of the leaders in a secret sorority within Nxivm that exploited its members.
As part of her role in the group, Mack worked with Raniere in the sex trafficking and forced labor of one woman and the attempted sex tracking of another, according to the indictment.
Last month, one of the group’s co-founders, Nancy Salzman, pleaded guilty to charges in the case. Two weeks later, her daughter, Lauren Salzman, also pleaded guilty to racketeering conspiracy and racketeering counts.
Others charged in the case include Raniere and Clare Bronfman, an heiress to the Seagram’s liquor fortune.
This article originally appeared in The New York Times.