The concept is very interesting and the link to mathematics is unusual.  For me the ending seemed rushed and a little unsatisfactory but I read it quickly and enjoyed it.  

This is a murder mystery story for murder mystery fans. Part anthology, part deconstruction, this book is creative and clever and gives the reader so much to uncover. Mysteries upon mysteries upon mysteries, and each one is cleverer and more enjoyable than the last. 

"And that's what differentiates a murder mystery from any other story with a surprise at the end. The possibilities are presented to the reader up front. The ending just comes back and points to one of them."

This book applies an intriguing framework to the murder mystery formula. In alternating chapters, we follow an editor discussing seven short stories with the author. He wrote a mathematical thesis about the basic requirements of a murder mystery story and their possible permutations. His stories exemplify some of the weirder combinations of ingredients. These seven stories provide the other half of the book. After each, the editor points out a curious discrepancy she noticed in the story. Part of the game for the reader is seeing if you can guess the permutation before the reveal or notice the discrepancy yourself. It adds layers to the usual fun of trying to uncover the details of the mystery before the detective.

This was a cleverly done book with some good twists and plenty to think about. I actually liked the short format of each mystery. Each had its own tone and intent. The problem for me was that really only my intellect engaged with this story. I wasn't particularly curious, excited, or attached to any characters. So when twists happened or the worst was revealed, my reaction was kind of a *shrug.* It didn't generate enthusiasm even though I was interested.

I think if you're looking for a mental puzzle or like short-form murder mysteries, this book will appeal to you.