'Fifty Shades of Grey' author E.L. James 'terrified' of the movie

“Fifty Shades of Grey” author E.L. James says she’s written another book following the release of her bestselling erotic trilogy.

Hold your horses, though, fans – James says the book (subject matter undisclosed) is written but, when she was asked in an interview with Entertainment Weekly if she would publish it soon, she said, “I don’t know.” 

She said the book does also have sexual themes but added, “It's very different than 'Fifty.’”

The last book James released was 2012’s “Fifty Shades Freed,” which was the third book in her “Fifty” trilogy. The first book in the series is now being adapted into a film starring “Once Upon a Time” actor Jamie Dornan and “Ben and Kate” actress Dakota Johnson.

James told Entertainment Weekly that she’s “terrified” about the movie.

“I’ve been terrified from the moment I published the book,” she said. “You don’t expect this kind of success. Even now it floors me. My only ambition for the books was to see them in bookstores. This is huge. And there is this passionate fandom; we need to get this right for them.”

When asked if she thought she herself would be blamed if the movie didn’t meet fans’ expectations, James said, “Oh God, of course they will. They hold me responsible for everything.”

The author also spoke about the departure of “Sons of Anarchy” actor Charlie Hunnam from the project and the subbing in of Dornan.

“It was disappointing, but it is what it is,” James said of Hunnam's departure. “I wish him well. And now we have Jamie [Dornan], and that’s great. It’s been interesting with Jamie, [the fan reaction] has been so positive.”