'The Graveyard Riddle' by Lisa Thompson: Signed bookplate copy. Paperback
"An old, abandoned house hides a secret within its walls...
When Melody Bird meets the mysterious Hal, he tells her he's an undercover spy, keeping tabs on a gang of jewel thieves. But can a young boy really be in charge of such a dangerous mission?
Melody is determined to decode the strange riddles hidden in the graveyard, but Matthew and Jake wonder whether Hal is the true puzzle to be solved...?"
Published by Scholastic UK