Terminator: the Sarah Connor Chronicles to start its second season on Monday, 9/8, 8:00. (spoilers).

The first episode, Sampson and Delilah has the following tv-guide/tivo description:

"Rocked by the Jeep explosion, John’s 16th birthday forces him to confront the reality of his destiny alone. Meanwhile, Agent Ellison faces off with his faith and the Feds in the aftermath of Cromartie’s massacre, and a new player is introduced, Catherine Weaver (Manson), who is the CEO of a high-tech corporation."

In a recent interview with tv-guide, Thomas Dekker talked about some of the transformations that his character will undergo in the first episode of the season. As he described it, there's a lot more bound up in the statement "confront the reality of his destiny alone" than you might think. He said that John of Season two will almost be a different character from season one. He will be colder and somewhat of a jerk, as he hardens himself for what is to come.

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Thomas Dekker tv guide interview