An actress who’s best known for her role on a TV drama series entered a not guilty plea today in a case in which she’s charged with helping to recruit women into a cult-like organization.

“Allison Mack was charged Friday [with] sex trafficking after federal prosecutors said she worked as a slave ‘master’ recruiting women to a group led by a man who sold himself as a self-improvement guru to the stars,” the AP reports. “Mack entered her plea in federal court in Brooklyn. The judge refused a request by her lawyers to release her without bail.”

Mack is best known for her role as Chloe, one of Clark Kent’s best friends, on the WB and CW series “Smallville,” which wrapped in 2011. Mack’s many other TV roles have also included playing Amanda on FX’s “Wilfred” and Kate Jacobs, a recurring role on Fox’s “Opposite Sex.”

“Prosecutors say she helped recruit sex slaves for leader Keith Raniere and his group called NXIVM,” the AP notes.

Raniere is reportedly being held on trafficking charges.