"What I thought I was learning was self-help and personal growth," she said of the group, which has been called a cult by some.
Tom Welling, Michael Rosenbaum and Allison Mack starred together in the show "Smallville" from 2001 to 2011.
A woman took the stand and alleged "Smallville" actor Allison Mack invited her to an NXIVM group meeting where someone forcibly performed oral sex on her while she was blindfolded.
Alaina Huffman said she "had been invited to several meetings" by Allison Mack back when they were filming "Smallville." Turns out, those meetings were a part of the NXIVM sex cult, for which Mack is currently facing sex-trafficking charges among several others.
Lauren Salzman claimed Rosa Laura Junco was the only woman in Keith Raniere's all-female inner circle the NXIVM founder didn't have sex with.
Mack is facing a 15-year minimum, maximum life sentence on charges of sex trafficking.
Lawyers for Raniere reportedly wrote that the texts about owning a "slave ... that you could groom, and use as a tool" were taken out of context.
Stone, who worked for Trump until a rancorous split in 2015, was once on the group's payroll.
Mack allegedly preyed on vulnerable women using a tactic described as "love bombing."
A whistleblower for the group told Newsweek that Mack was "deeply influenced" by charismatic leader Keith Raniere.
She allegedly recruited women for sex with the cult leader and helped brand them with his initials.
People have surmised that Mack is "co-conspirator No.1," in an abusive sex cult and also a slave to leader Keith Raniere.
Keith Raniere is alleged to have created a secret society in which he blackmailed "slaves" and branded them with his initials.