In the 100th episode of the series, Clark (Tom Welling) reveals his secret to Lana (Kristin Kreuk), Jonathan (John Schneider) and Lex (Michael Rosenbaum) learn the results of the senatorial election and there is a tragic car accident on the highway that takes the life of someone Clark loves. A desperate Clark appeals to Jor-El for help. Allison Mack, Erica Durance, John Glover and Annette O'Toole also star.