You can find more detailed episode guides and character breakdowns on sites like the Smallville Wiki or TV Maze.
: Earl Jenkins claims he was experimented on at a secret "Level 3" facility within the LuthorCorp plant. When Lionel Luthor denies the level even exists, Earl takes a class of students—including Clark Kent and Chloe Sullivan—hostage during a field trip to the plant. Watch Smallville S01E (8)
: Lex Luthor, desperate to prove he is different from his father, offers himself as a hostage in exchange for the students. He also begins to realize that his father, Lionel Luthor , has been keeping dangerous secrets right under his nose. You can find more detailed episode guides and