About Young Justice Season 1, Episode 1 : Independence Day

Robin, Aqualad, Kid Flash, and Speedy are finally ready to join the Justice League as full members. However, they soon discover that are to be treated as "junior members." An enraged Speedy leaves, while the other three strike out on their own to investigate a mysterious fire at Cadmus Laboratories. The trio soon discovers that Cadmus conceals a major conspiracy, and one of its goals is to create a clone of Superman for their own ends. Guest Stars: René Auberjonois, Crispin Freeman, Alan Tudyk, George Eads, Keith Szarabajka, Nolan North, Kevin Michael Richardson, Phil LaMarr, Yuri Lowenthal, Bruce Greenwood, Stephanie Lemelin,