Writer Nick Bantock's latest asks reader to really get involved

Writer Nick Bantock, the creator of the much loved Griffin & Sabine book series, is back with a new project.
Made up of anagrams, picturegrams, number puzzles and wordplay Dubious Documents wants you the reader to put on your thinking cap and help a character named Magnus Berlin get to the bottom of something big.
We tracked down Bantock and asked him a few questions about the new work and why he likes a good puzzle and a good letter.
Nick Bantock Photo: courtesy of Chronicle Books
Q: How do