Sazerac has made an excellent explanation of how to find the last tome in his role ascension table on
Page two of the best tips.
One thing, though: It sounds to me like you are playing the unpatched version of the game. If that is the case you will never be able to leave the pyramid again once you have re-entered it.
Some awkward bug at work there. You will either have to reload a game that has been saved prior to your slaying Cet (or whatever you did with him) or install the patch. (The latter I do not recommend). [img]smile.gif[/img]