Lex (Michael Rosenbaum) finds Lucas (guest star Paul Wasilewski), the son Lionel (John Glover) gave up for adoption, and brings him home in the hope that the two of them can unite against Lionel. When Lionel's machinations end up putting all three of them in a dangerous situation, Lex is left to wonder whom he can really trust. Meanwhile, Clark (Tom Welling) decides to take a job at the Talon.