It's up to the 16th episode now in S2, and basically any question you had since the beginning of the show has now been revealed in some way or another. I personally rate S2 above S1 at this point.
Ironically, when this show first started, I didn't give it a chance because I couldn't take Anna Torv' acting. Or maybe it was just the way the character was written. Either way, I hated the first couple episodes first time around. A year later, a buddy of mine tells me he's still watching the show and tells me it's become completely awesome and I should try it again. I do, and man, I haven't been let down.
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