September 15th, 2026: The Steal (Non-Fiction)
The Horned One's Secret (A Case for the Master Sleuths, #12) was the most recently released book by Alex Wagner, on February 28th, 2026.
Alex Wagner Stats: The most read book by Alex Wagner on Book Notification is Murder on the Occidental Express, the first novel in the Penny Küfer Investigates series.
Below is a complete list of Alex Wagner books in publication and chronological order, broken down by series. The most popular series by Alex Wagner is the Penny Küfer Investigates Series.
A sled dog and a kitten team up to solve mysteries in these cozy cases for animal lovers.
A disgraced merchant and a clever slave girl solve brutal murders in ancient Rome, facing danger, conspiracy, and deadly secrets at every turn.
Ranked by popularity, the top Penny Küfer Investigates books are Murder on the Occidental Express, Death of a Snoop, and Deep Dive into Death.
Ranked by popularity, the top Westerholt & Storm books are Mine Is The Night, The Locked Rooms, and The Lies She Spun.
Alex Wagner is the author of the A Case for the Master Sleuths series which currently consists of 12 novels. The A Case for the Master Sleuths series started in 2022 with the novel Cats and Other Calamities. The most recently released novel in the A Case for the Master Sleuths series was The Horned One's Secret which was released in 2026. There are no upcoming novels for the A Case for the Master Sleuths series.
Alex Wagner has also written the Penny Küfer Investigates series which has 8 books including Murder on the Occidental Express and Death of a Snoop.
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Home » Authors » Alex Wagner List of Books
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