Mensa Whodunits Author:Hy Conrad, Bob Peterson, Bill Wise Official Mensa Puzzle Book: You can solve some of the most dastardly, downright confounding crimes ever committed. But first, check out some helpful tips that only the best detectives know about deciphering secret codes; writing messages in invisible ink; and dusting for fingerprints. — Now you're ready to go out into the world and catch the ... more »evil criminals who have been preying on innocent citizens. From a jewelry heist to a Halloween homicide, you're on the case and people everywhere are safer because of it.« less