The cast of 'The Vampire Diaries' knows how to keep a secret -- in fact, we're pretty sure their jobs depend on their ability to do so.

Lucky for fans who love surprises, but unlucky for reporters on the Comic-Con press line for the hit CW show, their lips were shut tighter than the entrance to Katherine's tomb.

Still, we managed to unearth a few hints about what we can expect from Season 3, including what Stefan's new alliance with Klaus might mean for his future with Elena ("He's trying to hold on as much as he can to the humanity that's left inside of him," Paul Wesley said) and what more we might learn about Klaus ("Maybe see a little more vulnerability to him, a little more of a human side," Joseph Morgan ventured. "... if he has such a thing.")

And we also got some insight into what Damon and Elena's mindsets will be when the show returns: "Damon's pissed," Ian Somerhalder said matter-of-factly. And about that kiss? "I'm never gonna hear the end of this one, am I?," laughed Nina Dobrev.

One more thing about that kiss: Somerhalder was wondering if we were all watching the same "steamy, passionate kiss" in the finale that he was. From his vantage point, there was nothing sexy about it.

Doesn't matter -- we hear there's plenty more lip-locking to come in the season premiere. Watch the video for more scoop.