As in the earlier book The Sherlock Holmes Crossword Puzzle Book, each mystery is told in condensed form. It includes the problem, the action, and the clues but not the solution. That will be found among the words of the crossword puzzle that follows the story. Solve the puzzle, fill in the spaces below it, and presto the solution. Then test your ability as a sleuth by turning to the answer page at the back of the book; there you ll also find an entertaining epilogue to the mystery. (And, once again, between the puzzles, intriguing glimpses of Sherlock Holmes and his world are featured.) In...