Allison Mack set off on her acting career at a young age, playing dorks, "plain Janes" and other blonde-haired, girl-next-door types across the ‘90s and early aughts. But when a crisis of confidence presented a fork in her road, Mack veered down a dark path of sex-trafficking, conspiracy and a whole lot of interpersonal manipulation. How did it all happen? We trace the story in this episode.