Save your game! Just before you do anything that has the word 'last' in it (such as "the last page"). This is the place in the game that you can do something to end the game, but not the desired ending. So be careful.
Either or both of the brothers have told you they need just one more page and where and how to get it. Which one do you trust? What should you do? Try to reflect on everything that has happened in the game. Obviously, not everyone can be telling the truth.
I am having trouble with the fireplace.
I think I'm done, but I'm not sure?
Go back to Myst Island -- The real stepping stones