So you know the drill: Movies that are adapted from books are generally not 100 percent accurate since it is unrealistic to convert every single scene in a book into film. This is proven by the Harry Potter franchise and the Twilight franchise.
The big question is, how is The Fault In Our Stars different from the book?
The Huffington Post has spotted at least a dozen differences between the screenplay and the book. (Spoiler alert: If you haven't seen the movie yet, beware of spoilers if you click the link below!)
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