Emma Watson is the latest celebrity to be embroiled in the notorious sex cult saga surrounding the secretive NXIVM DOS.
Smallville star Allison Mack allegedly played a major role in recruiting sex slaves for the group, recently pleading not guilty to a number of related charges.
Historic tweets from Mack are now making headlines as they appear to show her trying to recruit fellow celebrities into the alleged sex cult.
Watson and Kelly Clarkson both received tweets from the actress looking to involve them.
Mack appealed to Watson's work with the UN for gender equality, telling her: "I'm a fellow actress like yourself, and involved in an amazing women's movement I think you'd dig".
A month later she wrote: "I participate in a unique human development & women's movement I'd love to tell you about".
Kelly Clarkson received a more subtle: "chat sometime".
Mack is facing charges of sex trafficking, sex trafficking conspiracy and forced labour conspiracy over her involvement with NXIVM DOS.
She faces 15 years in prison if convicted.
Court documents allege Mack forced "slaves" to have sex with alleged cult leader Keith Raniere and also provided him with naked photos of the women.
Women were also allegedly forced to strip nude and have their skin branded with his initials.
NXIVM DOS claimed to have operated as a female mentorship group.