Murdle Jr.: Sleuths on the Loose
Inspired by the global phenomenon of the Murdle puzzle books comes the first novel in a new thrilling mystery series, for fans of Mr. Lemoncello's Library and The Swifts.

It's a cloudy day on the Sacred Kidney playground, but Jake likes it that way-dark and uncertain. For a junior detective like Jake, standing up to bad guys is a piece of cake. After all, she's the only detective at Sacred Kidney Elementary with a hard-earned badge to her name. But just as Jake and her sidekick Sterling prepare to face off against the biggest bully in school, there's a scream from inside the library.

The kids are sure they heard Miss Saffron cry out, but when they arrive at the scene of the crime, the library is how it's always been: filled with books, but no Miss Saffron to be found! None of the adults still there after school are talking, but Jake, Sterling, and Brick the bully are determined to find out what happened. This unlikely trio pinky promises to solve...the crime at Sacred Kidney!

The second Murdle Jr. puzzle book Ready, Set, Solve! is a companion for this novel, with some Easter egg puzzles to solve between the pairing of books, for readers with the keenest of eyes!

SOLVE THE PUZZLES:
Curious Crimes for Curious Minds
Ready, Set, Solve!


READ THE MYSTERIES:
Sleuths on the Loose
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Murdle Jr.: Sleuths on the Loose
Inspired by the global phenomenon of the Murdle puzzle books comes the first novel in a new thrilling mystery series, for fans of Mr. Lemoncello's Library and The Swifts.

It's a cloudy day on the Sacred Kidney playground, but Jake likes it that way-dark and uncertain. For a junior detective like Jake, standing up to bad guys is a piece of cake. After all, she's the only detective at Sacred Kidney Elementary with a hard-earned badge to her name. But just as Jake and her sidekick Sterling prepare to face off against the biggest bully in school, there's a scream from inside the library.

The kids are sure they heard Miss Saffron cry out, but when they arrive at the scene of the crime, the library is how it's always been: filled with books, but no Miss Saffron to be found! None of the adults still there after school are talking, but Jake, Sterling, and Brick the bully are determined to find out what happened. This unlikely trio pinky promises to solve...the crime at Sacred Kidney!

The second Murdle Jr. puzzle book Ready, Set, Solve! is a companion for this novel, with some Easter egg puzzles to solve between the pairing of books, for readers with the keenest of eyes!

SOLVE THE PUZZLES:
Curious Crimes for Curious Minds
Ready, Set, Solve!


READ THE MYSTERIES:
Sleuths on the Loose
17.47 In Stock
Murdle Jr.: Sleuths on the Loose

Murdle Jr.: Sleuths on the Loose

by G. T. Karber, Chris Grabenstein

Narrated by Laura Darrell

Unabridged — 5 hours, 48 minutes

Murdle Jr.: Sleuths on the Loose

Murdle Jr.: Sleuths on the Loose

by G. T. Karber, Chris Grabenstein

Narrated by Laura Darrell

Unabridged — 5 hours, 48 minutes

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Overview

Notes From Your Bookseller

Murdlers, sharpen your pencils and get ready to sleuth — there are even more puzzling problems to solve.

Inspired by the global phenomenon of the Murdle puzzle books comes the first novel in a new thrilling mystery series, for fans of Mr. Lemoncello's Library and The Swifts.

It's a cloudy day on the Sacred Kidney playground, but Jake likes it that way-dark and uncertain. For a junior detective like Jake, standing up to bad guys is a piece of cake. After all, she's the only detective at Sacred Kidney Elementary with a hard-earned badge to her name. But just as Jake and her sidekick Sterling prepare to face off against the biggest bully in school, there's a scream from inside the library.

The kids are sure they heard Miss Saffron cry out, but when they arrive at the scene of the crime, the library is how it's always been: filled with books, but no Miss Saffron to be found! None of the adults still there after school are talking, but Jake, Sterling, and Brick the bully are determined to find out what happened. This unlikely trio pinky promises to solve...the crime at Sacred Kidney!

The second Murdle Jr. puzzle book Ready, Set, Solve! is a companion for this novel, with some Easter egg puzzles to solve between the pairing of books, for readers with the keenest of eyes!

SOLVE THE PUZZLES:
Curious Crimes for Curious Minds
Ready, Set, Solve!


READ THE MYSTERIES:
Sleuths on the Loose

Editorial Reviews

Kirkus Reviews

2025-04-19
A middle schooler races to uncover the mystery of a missing third grade teacher at Sacred Kidney, her Catholic school, in this series opener that’s linked to the Murdle Jr. series of puzzle activity books.

Jake, a junior detective appointed by “the grand master of logic,” Deductive Logico, is defending her nerdy sidekick, Sterling, against school bully Brick when a scream interrupts them. Peering into the library, the trio witness Miss Saffron scuffling with an unknown individual. When she’s absent the next day, Jake, Sterling, and Brick become an unlikely team in pursuit of answers and suspects. Sterling and Brick evolve beyond their archetypes, and Jake remains steadfast in her commitment to truth and justice. As is common in middle-grade mysteries, the adults are easily fooled by the junior sleuths. The team’s investigation, far from amateur, utilizes a secret command center equipped with pricey gadgets that titillate the imagination. Jake’s narration evokes the golden age of whodunit detective stories (“Let’s keep friendship outta this, okay, pal?”). Grids and instructions allow readers to join in solving the mystery. Alongside the investigation, a storm—both literal and symbolic—brews, only clearing once order and justice are restored. Black-and-white full-page and spot-art illustrations add a humorous touch. Characters largely present white.

Readers will become inquisitive sleuths as they navigate this whimsical, playful mystery. (reading guidelines, Detective Club message, answer key)(Mystery. 7-11)

Product Details

BN ID: 2940191093208
Publisher: Hachette Audio
Publication date: 05/27/2025
Series: Murdle Jr. Mysteries
Edition description: Unabridged
Age Range: 8 - 11 Years
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