This book is a retelling of the Ramayana, or, the story of Rama and Sita, and the story behind the festival of Diwali. While this book is certainly interesting, I think the title of illustrated is a bit misleading, as the pictures, while beautiful, are not as plentiful as I would have liked. I was fairly upset at how rare they were, given just how gorgeous they are.
Having not read the story before, I have reservations about getting this book, since it reads as the story of a woman who is constantly getting beat up on and thrown out of her own home with the man who says he loves her being the the one who keeps throwing her out. Gossip or not, god or not... jerk move, Rama. Jerk move.
Because of this, I can't recommend it to children or as part of story hour - the relationship is far too anti-woman for that. It's also far too sparsely illustrated for a graphic novel section. It occupies a strange place - but I think if you were looking to expand your adult section on Hinduism, it would be a good addition.