The Unholy Grail: A Tale of Groosham Grange
By Anthony Horowitz.
Description
David is on course to win the Unholy Grail, a cup of magical power presented to the star pupil of spooky Groosham Grange. However, a series of suspicious mishaps occur. Someone wants to stop him winning and, worse, Groosham Grange itself is in danger. Can David prove himself and save his school. - from Amzon
ISBN(s)
0744524784, 9780744524789
