Robert Pattinson has joined the cast of Twilight, Summit Entertainment's teen-vampire thriller, according to The Hollywood Reporter.

Pattinson will play the role of Edward, a teenager who leads a double life as a vampire and becomes romantically involved with his nonvampire high school classmate Bella (Kristen Stewart).

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Catherine Hardwicke (Thirteen) is directing the film, which is set to go into production in early 2008, from a script by Melissa Rosenberg (Step Up).

The movie is based on Stephanie Meyer's best-selling young-adult novel. Meyer penned two sequels, and Summit is hoping to turn the property into a film franchise.