Puzzling Adventures of Dr. Ecco

"The Puzzling Adventures of Dr. Ecco" is a book about puzzles and problem solving, disguised as the fictional tale of Dr Jacob Ecco. We first meet Dr Ecco at home in Greenwich Village, New York, where he is visited by his diverse clientele - government leaders and shadowy double agents, corporate giants and eccentric millionaires. Each client presents Dr Ecco with an intriguing puzzle and is willing to pay handsomely for its solution.