A man about to leave his marriage is poisoned to death while his wife, the logical suspect, is hundreds of miles away. Tokyo Police Detective Kusanagi and his assistant agree to disagree about
the guilty party: was it his wife, his girlfriend, his business associate, or a random crime? They call on physics professor Manubu Yukawa, and even the brilliant mind of 'Detective Galileo' is
challenged by a crime that is implausible, methodical - and perfect.