None of the above. If you are smart, you have planned ahead by checking out the crime-fiction section of your local bookstore. Forget the old clich, if this is Tuesday, it must be Belgium. Instead try: If this is Bombay, read Leslie Forbes; for Moscow, check out Martin Cruz Smith; for Venice, Donna Leon; for Chicago, give Sara Paretsky a whirl; and if you find yourself by chance in Botswana, Alexander McCall Smith is your man. Under no circumstances should you head to North Bay without packing a Giles Blunt or two.