I work for a chain of bookstores that promise Millions of Books. They lie, but that's beside the point.
I had a woman come into today and swear that the last time she read Where the Red Fern Grows, the dogs didn't die.
Because the endings to books change all the time. Last time I read Lord of the Rings, Sauron got the Ring and Legolas ended up snogging some half vampire chick that fell into Middle Earth from California.