With exactly 100 mystery puzzles, Brain Games Unsolved Crimes will engage the full battery of your detective skills! This collection includes: crime-themed word searches and crosswords, as well as puzzles in which you examine crime scenes, identify matching fingerprints​, and much more! Improve your logic skills, attention to detail, and ability to read between the lines while investigating. Complete answer key found at the back of the book. Spiral bound, 160 pages.