Here are games to improve long-term memory and games to flex working memory. Games for executive functioning, for attention to detail, for multitasking, and for processing speed. There are puzzles, trivia quizzes, visual challenges, brainteasers, and word games. Using spycraft materials included in a sealed envelope inside the book, a canny reader will be able to discover and unravel clues embedded in the text and illustrations, and solve the book