Spot the Alien: Challenging Logic Puzzles

It's 1986 and aliens have invaded the small town of Chickenshack, GA. Using only logic, can Agent Neil Chambers determine which of the citizens are really from another planet? He'll need to, in order to save the town, the Earth -- and the woman he just might love!

This book contains 47 challenging logic puzzles and solutions, including unique variations on the classic knights & knaves problems and the world's first logical jigsaw puzzle. Difficulty levels appropriate for ages 14 to adult.