Inferno by Dan Brown is a book worth reading. Dan Brown's inspiration for this book is Dante Alighieri's Inferno as what the book is called. Inferno is the first out of three parts in the Divine Comedy.
Angels and Demons is my favorite Dan Brown book. Also have read, The Da Vinci Code and The Lost Symbol. I feel that Dan Brown is an author who you just have to experience at some point along your reading journey.