I have all 5 pages (or books) and still can't complete
You need 6 pages, not 5.
Its really easy to miss the king down in the crypt since when he spawns initially he moves to a corner of the chest room.
and page count is three in lions arch, one in queensdale, one in kessex hill, and one in gendaren fields.
Ok I missed one in LA will have to go back and find it thanks