The Unsolvable Case

Name: The Unsolvable Case
Brand: Titan Books
Price: 30.75 AUD
Availability: PreOrder

By: Courtney Smyth

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Paperback | 22 September 2026

At a Glance

Format
Paperback

Dimensions(cm)
19.8 x 13.0 x 5.5

Paperback

$30.75

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Available: 22nd September 2026

Preorder. Will ship when available.

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. Perfect for fans of supernatural mysteries and cosy crime by authors such as Ben Aaranovitch, Josiah Bancroft and Tammie Painter. It's three days until Samhain, and the Undetectables are going to die. No longer taking magical cases (not that anyone would hire them), they've well and truly given up the ghost. Meanwhile, Theodore (the relinquished ghost in question) is on the run. Wanted in connection with the Undetectables' last case, he's hiding in the last place anyone would think to look, keeping secrets (badly) and forming unlikely alliances (slightly less badly). When a copycat killer emerges and history appears to be repeating itself, the Undetectables are called up for one last case. Mallory, Diana and Cornelia find themselves in a final race against the clock - but this time, the whole of Occulture is at stake.

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