The griffin of Darkwood

Twelve-year-old Will Poppy has always been fascinated by writing, but when his mother dies and he has to live with his crabby aunt, he finds himself unable to write a word. When he is sent a mysterious package that includes an old picture of his grandparents and a piece of cloth with the words "The Griffin of Darkwood" on it, his aunt takes him to a run-down castle with servants who are up to no good. Now Will must find his way in this new world, and discover the magic all over again.