# The Undetectables series - The Unsolvable Case

Canonical: https://www.bookquiver.com/courtney-smyth/the-undetectables-series-the-unsolvable-case

![The Undetectables series - The Unsolvable Case](https://quivercdn.com/covers/titan-books/courtney-smyth/the-undetectables-series-the-unsolvable-case_978-18-3541-223-7.jpg?v=2026-05-26%2003%3A46%3A27)

- Authors: [Courtney Smyth](https://www.bookquiver.com/courtney-smyth)
- Language: en_US
- Published: 2026-09-22

## Description

The queer witchy fantasy murder mystery series concludes in one last mystery for Mallory, Cornelia and Diana, as they have to solve their biggest, and most important case of all - who killed Theodore....

## Editions

### The Undetectables series - The Unsolvable Case

- Publisher: titan_books
- ISBN: 978-18-3541-223-7
- Pages: 496
- Published: 2026-09-22
- Language: en_US