That notorious book was published here, some say that it is no longer published. I don't know for sure.
But my mother bought it. I tried to tell her that it was a bad book. She agreed with me that davinci code was unreal and imaginary, but said that it was a good "fiction book".
So, trying to convince her that the book is blasphemous, I told her that it contained something about Christ's marriage to a former prostitue.
My mom knew that such a thing never happend, nevertheless she said:" What is blasphemous about that? Christ could marry if He wanted, and marrying a woman who has repented sincerely is not sinful."
How can I convince her that it is not only an unreal fiction, but also a blasphemy?