Question on the book inkspell...pls answer?

Question: Question on the book inkspell!.!.!.pls answer!?

shortly after dustfinger dies everyone is talkin about the adderhead's immortality!.!.!.den Mo says he tricked the adderhead about the book!.!.!.!.!.how does he!? what has he done!?!.!.!.!.!.pls help coz dis is a very imp thing to the plot
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Best Answer - Chosen by Asker:

"According to Meggie's and Fenoglio's plan, Meggie tells the Adderhead that Mo can save him from what he fears most---death---if he lets all the prisoners go!. Mo will bound the Adderhead a blank book that can make the Adderhead immortal, as long as the book remains intact!. Meggie did not say the whole truth, that the book could kill him too if "heart", "spell", and "death" are written in it!. The Adderhead agrees to the deal!. (These words are the names of the books in the series: Inkheart, Inkspell, and Inkdeath) Mo binds the book, setting the plan in motion, but the Adderhead had already found out about the trick because he read Meggie's letter!. The Adderhead tests the book's magic on Firefox, having Firefox write his real name (not "Firefox", as he prefers to be called!.)!. The Adderhead then has the words scraped out,(killing Firefox, who has had a sword run through him) and writes his own name on the blank pages, and locks away the book!. Satisfied, he lets Meggie, Resa, Mo, and the other prisoners go!."Www@QuestionHome@Com