"Beautiful Creatures" hits theaters this weekend, but before it was a movie, it was a best-selling book by authors Kami Garcia and Margaret Stohl, friends from California who initially didn't think anyone but their kids would be reading the tale of mortal Ethan Wate and his beloved, caster Lena Duchannes.

The writing partners spoke to Moviefone at YALLFest, the annual Young Adult book festival they helped organize in Charleston, S.C. -- not far from Gatlin, S.C., the fictional small town they created for "Beautiful Creatures." Garcia and Stohl admitted that turning their first book into a movie was a wild but happy ride all thanks to their respect for writer-director Richard LaGravenese.

Here are five interesting things they shared about their book and the process of turning it into a film.

1. They Wrote the Book on a Dare "Beautiful Creatures" started off as a collaborative idea cooked up over a lunch between friends who liked to swap books. But then Stohl told her oldest daughter -- Garcia's student -- who dared them to actually write the book. "We took her up on it and started writing and writing. We weren't even thinking about having it published, because we were writing it for our teenagers. We would change things as they made suggestions, like they wanted to read more about Ethan's best friend Linc and Lena's cousin Ridley -- and that's how we went on until we were finished." Of course after it was done, they -- along with their trusty kid readers -- felt they had a compelling story on their hands that could actually get published.

2. Ethan Is a Nice Guy On Purpose There's a common trope in young adult literature -- and teen-targeted TV shows -- in which the edgy bad boy is portrayed as always being the most desirable. Garcia and Stohl weren't interested in promoting that trend ("Girls need to realize that sometimes a jerk is just a jerk," said Stohl), so they came up with Ethan: a 16-year-old guy who's loving, supporting, and smart -- not to mention a selfless gentleman. "We joke that we made him the exact opposite of every guy Margie and I dated at that age," Garcia admitted, laughing. "That's why he's such a great guy."

3. One Actor Was Their Dream Come True Some authors must be shocked at who plays their characters, and you can add Garcia to that list -- but in a good way. When she found out Academy Award winner Jeremy Irons was going to play Macon Ravenwood, she thought it was a joke. "He's who I always pictured in my mind as Macon -- his voice, his demeanor, everything. I thought they were playing a prank when they told me, because he's exactly who I thought of for the character all along."

4. Gatlin Isn't Real, But Its Culture Is Although you won't find Gatlin on a South Carolina map, Garcia has the Southern roots to base a lot of Gatlin on real people and places -- they even used some of Garcia's (that's her married surname) family tree as inspiration for some of the names. "Kami grew up with three generations from the same town in the South," Stohl said. Garcia added that it was easy to make Gatlin " the kind of place where gossip spreads immediately and everyone knows everything about each other." And those Civil War battle reenactments that glorify the Confederacy? "Oh yeah, those really happen!" Garcia says.

5. They Don't Mind the Changes, Really Although fans of the four-part series may get in a huff about the considerable changes to the book, the authors say they understand why their 550-page book had to be streamlined. "We're not screenwriters," Stohl said. "That's a completely different skill set. Our books are hundreds of pages, and screenplays are what --120 pages? We wouldn't have known how to cut down our story that way." But more than that, they trusted LaGravenese to keep the spirit of their unique story. "He just got us. He loved the characters, loved the Southern Gothic, and he had our same vision for what the story was really about," Stohl added.
Beautiful Creatures Movie Poster
Beautiful Creatures
Based on 40 critics

In the small town of Gatlin, S.C., teenage Ethan Wate (Alden Ehrenreich) sees his static world shaken... Read More

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