Solve every puzzle, just like the Secret Seven, in this fun book of 100 brain-teasers inspired by Enid Blyton's famous sleuths. Perfect for travel and holidays. Bursting with codes, puzzles, sudoku, crosswords, word searches, I-spy games and more, this fun book is inspired by the mystery-solving kids in the bestselling Secret Seven stories by Enid Blyton. This is the perfect book to keep kids busy on long journeys or in the holidays, anywhere, any time. No need to stare at a screen or hunt for a charger - you'll only need a pencil and your brain for hours of entertainment.