​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 ye...