5 things to know about ‘Twilight’

> “Twilight” the movie (opening Nov. 21) is based on author Stephenie Meyer’s teen vampire book quartet, which has sold more than 17 million copies. The story revolves around high schooler Bella Swan and the object of her desire, Edward Cullen, a vampire. “Jane Austen meets Bram Stoker,” one reviewer said.

> Controversy: Some fans initially protested the casting of Robert Pattinson, a relative unknown, as Edward. Who did the hardcore fans want? Tom Welling (“Smallville”) and James Franco (“Pineapple Express”), for instance.

> Author Meyer is a mother of three and a practicing Mormon whose faith finds its way into the series. There’s passion, but no sex before marriage.

> Director Catherine Hardwicke is well-practiced on the theme of teen love (and hormones); previous credits include “Thirteen” and “The Lords of Dogtown.”

> The soundtrack for “Twilight,” including songs by Linkin Park and Paramore, debuted on top of the Billboard 200 this week, becoming the third No. 1 soundtrack this year (“Juno,” “Mamma Mia!”).