Contributed by
Vijay Fafat
The second book in the series containing 45 mathematical puzzles woven into a string of adventures involving Dr. Jacob Ecco, “mathematical detective”. From its preface:
(quoted from Codes, Puzzles & Conspiracy [a.k.a. Dr. Ecco, Mathematical Detective])
Like its predecessor The Puzzling Adventures of Dr. Ecco, this book is dedicated to people who love to think and enjoy thrillers. Ecco, Evangeline, and Scarlet use mathematics and logic to battle a hidden conspiracy, and you are invited to enter the fray. The story revolves around original mathematical puzzles that you are as well equipped to solve as the protagonists.


See also The Puzzling Adventures of Dr. Ecco (which has its own entry on this website)and the sequels Dr. Ecco’s Cyberpuzzles, Puzzling Adventures, and The Puzzler’s Elusion which do not. 