And so my friend writes a book which we all read, loved and was published in 2001.

Ten years later, we see a movie with the same title of the book and has some content that looks like what was in the book.

The producer cum writer then says he never ever saw the book and wasnt even aware such a book existed and just did the story based on inspiration.

What should the author do? Does the Producer have a case? Is it possible to do a movie that looks so much like a book written by an author without seeing the book?

Lawyers in the house, I need some help here.