First, it is a collection of mathematical exercises. Motivated by a desire to solve the mystery, the reader is asked to work out some mathematical puzzles. The concept that evolved into this graphic novel actually began as an interactive project designed for the classroom, one that won 3rd place in the 6th Microsoft European Innovative Teacher's Forum.

Moreover, it is also an extended metaphor for the shocking developments in the philosophy of mathematics that took place in the early part of the 20th century. That the victim was a keynote speaker at the 1900 ICM and that another main character is named "Kurt" are probably enough clues for anyone with a knowledge of the history to figure out where it is going long before the big reveal.

Some readers really seem to love this book, but mathematical comic book author Marco Abate gave it a rather negative review in the Mathematical Intellgencer (Volume 39, Number 1, 2017), criticizing its mixing of falsehoods with true anecdotes and its failure to make full use of the graphic format. You can probably get a good idea of whether this book would be to your taste by looking at the video preview that was posted on YouTube.

Originally published in Greek by Ellinoekdotiki and more recently released in other languages by Birkhäuser Basel.