All 22 episodes from season 4 of the popular television series about Superman's early life. During this season: Clark (Tom Welling) faces rogue Kryptonians. Lex Luthor (Michael Rosenbaum) launches a vicious political campaign. The Fortress of Solitude rises. Clark's love for Lana Lang (Kristin Kreuk) deepens, and he and Lois Lane (Erica Durance) remain friendly adversaries. Episodes comprise: 'Arrival', 'Mortal', 'Hidden', 'Aqua', 'Thirst', 'Exposed', 'Splinter', 'Solitude', 'Lexmas', 'Fanatic', 'Lockdown', 'Reckoning', 'Vengeance', 'Tomb', 'Cyborg', 'Hypnotic', 'Void', 'Fragile', 'Mercy', 'Fade', 'Oracle' and 'Vessel'.