Allison Mack has been arrested for her alleged involvement in a sex cult.

On Friday, both the Smallville actress and Keith Raniere were charged with sex trafficking, sex trafficking conspiracy, and forced labor conspiracy, the U.S. Attorney’s Office for the Eastern District of New York confirmed to Yahoo Entertainment. Raniere, the founder of the self-help group NXIVM and the alleged cult leader, was arrested last month.

Within NXIVM, there was reportedly a secret “sorority” called DOS, also known as “Lord/Master of the Obedient Female Companions.” Mack, 35, was allegedly a DOS Master who recruited and directed slaves to have sex with Raniere, also known as “Vanguard.”

Allison Mack attends Amazon Studios’ premiere of Lost in Oz. (Photo: Todd Williamson/Getty Images for Amazon Studios) More