The actors who portrayed Mattie Devore and Sara Tidwell were almost a perfect match to the characters I imagined in the book.
I thought Pierce Brosnan was a bit of an odd choice before I saw the movie and still do, the British accent didn't really fit and I thought he was a bit old for the part, but I thought he played it pretty well.
Max Devore didn't appear as sinister as I imagined him and I thought Rogette Whitmore was suppose to have white hair.
I am often puzzled by the changes made in a film adaption when there seems no reason to change them, I guess I can understand the change of how Lance Devore died and I guess the changing of the sex of the Tidwell child was made to make it all apply to daughters only.
There was no mention of Noonan hiring Mattie a lawyer and him simply standing up to Devore in the deposition wasn't really enough to make him the big hero from the book IMO.
Also, at no point in the movie was the house referred to as "Sara Smiles."
These are just little things and over all, the story paralleled the book fairly well, but it seems that a few things were changed for no real reason.
Maybe I am becoming a little more tolerant as I get older, but it seems that King adaptions are getting better at following the book.