In PEOPLE's special New Moon issue, which hits newsstands Friday, Robert Pattinson shares his baby photos, Taylor Lautner growls for fans and Kristen Stewart gets intense.
"Twilight is about first love; New Moon is about heartbreak," says the film's director Chris Weitz. "That requires the actors to go to some very dark places."
But who was the most intense on set? "Kristen may be the most serious actor I've ever encountered," Weitz reveals. "She took the job of portraying Bella's depression very seriously."
In the sequel, Bella (Stewart) turns to best bud Jacob (Lautner) after her vampire love Edward (Pattinson) flees Forks, Wash., in the hopes of giving her a normal life. But as Bella grapples with her not-so-platonic feelings for Jacob, he transforms into a werewolf.
"This is a severely emotional movie," Stewart says.
But it's not all about the drama. "It's a pretty hot movie," says Ashley Greene, who thinks Stewart and Lautner "have this undeniable chemistry."
"I get nervous trying to represent Team Jacob in the right way," Lautner admits. "This guy [Pattinson] is some pretty good competition."
"Fans ask me to growl for them, and I really don't enjoy doing that," the 17-year-old star says. "Please just wait for the movie." The supernatural romance unfolds on the big screen Nov. 20.
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