From Wikipedia, the free encyclopedia Allison Mack (born July 29, 1982) is an American actress. She is best known for her role of Chloe Sullivan on the Superman-inspired television series Smallville. In 2018, federal authorities arrested Mack on charges of sex trafficking, sex trafficking conspiracy, and forced labor conspiracy related to her involvement in NXIVM and its subgroup, DOS. She pleaded guilty to racketeering and racketeering conspiracy charges and in 2021 was sentenced to three years in prison. Mack served 21 months in Federal Correctional Institution, Dublin, in California and was released in July 2023. Description above from the Wikipedia article Allison Mack, licensed under CC-BY-SA, full list of contributors on Wikipedia.