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Cluedle - The Case of the Dumpleton Diamond

50 Fiendishly Fun Mystery Puzzles
Series: Cluedle
Brief Description
Can you work out Cluedunnit?! Team up with world-famous private investigator Hartigan Browne to solve 50 fun brain-busting puzzles and crack the curious case of the missing Dumpleton Diamond. Use your detective skills to discover: Who pup-napped Dave the dog? What is important about The Flying... Read More
Format: Paperback / softback
$1500
Elsewhere:
$1700
Pre-order
Releases 2nd February 2027 (Approx. Date) Pre-order  "Cluedle - The Case of the Dumpleton Diamond" now to secure your copy from our first shipment

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A funny interactive mystery packed with brilliant brain-busting puzzles!

A funny interactive mystery packed with briliant brain-busting puzzles!

Book Hero Magic formatted this description to make it easier to read. While it's new and still learning, it may not be perfect - your feedback is welcome! Description

Can you work out Cluedunnit?! Team up with world-famous private investigator Hartigan Browne to solve 50 fun brain-busting puzzles and crack the curious case of the missing Dumpleton Diamond.

Use your detective skills to discover:

  • Who pup-napped Dave the dog?
  • What is important about The Flying Goat?
  • Why a missing key can unlock this case?

Packed full of codes to crack, evidence to evaluate, clues to unravel and maps to navigate, Cluedle - The Case of the Dumpleton Diamond is a funny, mystery puzzle book for code-cracking families and skilful young super sleuths. The perfect activity book for holidays, car journeys and rainy days!

Join Hartigan Browne to solve more mysteries in the bestselling Cluedle series with The Case of the Golden Pomegranate, The Case of the Silver Cipher and The Case of the Grindstone Goblet.

Or, if you're a super sleuth on the go, why not try Cluedle - 5 Minute Mystery Puzzles: Agent in Training and Cluedle - 5 Minute Mystery Puzzles: Round the World, and solve 50 fiendishly fast puzzles.

Cluedle - The Case of the Dumpleton Diamond was number 1 in the Nielsen Bookscan children's non-fiction charts for three weeks commencing 7.5.2024.

Series: Cluedle

View all
  • Cluedle - 5 Minute Mystery Puzzles: Round the World
    Pre-order
    Cluedle - 5 Minute Mystery Puzzles: Round the World
    Hartigan Browne might be Britain's greatest detective, but he's embarking on a global mission to solve cases all over the world. You'll need your detective skills to discover: What is suspicious about the wildlife tour Safari So Good? Has Filip van Dolphin been falsely accused of banana boat theft? What has been returned to Egypt's Great Pyramid? As you travel...
    Paperback
    $1500
    Elsewhere:
    $1700
    Available
    Ships from Supplier
  • Cluedle - The Case of the Grindstone Goblet
    Can you work out Cluedunnit? Perfect for mystery fans, Cluedle - The Case of the Grindstone Goblet is a funny, mystery puzzle book for code-cracking families and skilful young super sleuths. The ideal activity book for holidays, car journeys and rainy days! Team up with world-famous private investigator Hartigan Browne and solve 60 fun brain-busting puzzles to help the headmaster...
    Paperback
    $2299
    Available
    Ships in 4-6 weeks
  • Cluedle - The Case of the Dumpleton Diamond
    Pre-order
    Cluedle - The Case of the Dumpleton Diamond
    Can you work out Cluedunnit?! Team up with world-famous private investigator Hartigan Browne to solve 50 fun brain-busting puzzles and crack the curious case of the missing Dumpleton Diamond. Use your detective skills to discover: Who pup-napped Dave the dog? What is important about The Flying Goat? Why a missing key can unlock this case? Packed full of codes to...
    Paperback
    $1500
    Elsewhere:
    $1700
    Pre-order
    Out 2 Feb 2027
  • Cluedle - The Case of the Golden Pomegranate
    Pre-order
    Cluedle - The Case of the Golden Pomegranate
    Can you work out Cluedunnit? For mystery fans of all ages, Cluedle - The Case of the Golden Pomegranate is the perfect puzzle book for code-cracking families and skilful young super sleuths. Set sail on the high seas with world-famous private investigator Hartigan Browne and crack the curious case of the Golden Pomegranate by solving 50 fun brain-busting puzzles. A...
    Paperback
    $1500
    Elsewhere:
    $1700
    Pre-order
    Out 2 Feb 2027
  • Cluedle - The Case of Rudolph's Revenge
    Can you work out Cluedunnit at Christmas? A perfect gift or stocking filler for mystery fans, Cluedle - The Case of Rudolph's Revenge is a fantastic festive puzzle book for code-cracking families and skilful young super sleuths. Team up with world-famous private investigator Hartigan Browne and crack the curious case by solving 80 fun brain-busting Christmas puzzles. Packed full of...
    Paperback
    Sold Out
  • Cluedle - The Case of the Golden Pomegranate
    Set sail on the high seas with world-famous private investigator Hartigan Browne and crack the curious case of the Golden Pomegranate by solving 50 fun brain-busting puzzles. A funny and intriguing mystery story set on a super yacht where detectives need to discover: Who broke into Alota Vibratto's safe? How the professor's milkshake was poisoned? What's hidden in an ancient...
    Paperback
    Sold Out
  • Cluedle - The Case of the Silver Cipher
    The Hartigan Browne Detective Agency has been contacted by London's Secret, Secret Service (so secret, that even the Secret Service doesn't know about them) to help locate the whereabouts of a missing agent who was in possession of the top secret object known only as the Silver Cipher. Finding the cipher is a matter of national security, and will take...
    Paperback
    Sold Out

Book Details

INFORMATION

ISBN: 9781037407796

Publisher: Pan Macmillan

Format: Paperback / softback

Date Published: 15 October 2026

Country: United Kingdom

Imprint: Macmillan

Audience: Children

DIMENSIONS

Spine width: 15.0mm

Width: 131.0mm

Height: 198.0mm

Weight: 160g

Pages: 224

About the Author

Hartigan Browne, arguably Britain's greatest detective, has solved hundreds of complex crimes including robberies, murders, accidental deaths, fraud and at least one case of handling a salmon suspiciously. His success, however, means he is now overwhelmed with people requiring his help and cannot keep up with the demand for his services. A great believer that everyone has a brilliant mind, he is keen to mentor those who have the perseverance, resilience and curiosity that is required to join the Hartigan Browne Detective Agency.

Also by Hartigan Browne

View all
  • Cluedle - 5 Minute Mystery Puzzles: Agent in Training
    Calling all budding super spies! Enroll on The Hartigan Browne Detective Agency's ultimate training course to see if you have what it takes to become a world-class private investigator. Learn everything there is to know about super-sleuthing from Britain's greatest detective: Hartigan Browne. He'll teach you how to crack codes, examine evidence, and create disguises. Then, it's up to you...
    Paperback
    $1700
    In Stock
    Ships today
  • Cluedle - 5 Minute Mystery Puzzles: Round the World
    Pre-order
    Cluedle - 5 Minute Mystery Puzzles: Round the World
    Hartigan Browne might be Britain's greatest detective, but he's embarking on a global mission to solve cases all over the world. You'll need your detective skills to discover: What is suspicious about the wildlife tour Safari So Good? Has Filip van Dolphin been falsely accused of banana boat theft? What has been returned to Egypt's Great Pyramid? As you travel...
    Paperback
    $1500
    Elsewhere:
    $1700
    Available
    Ships from Supplier
  • Cluedle - The Case of the Grindstone Goblet
    Can you work out Cluedunnit? Perfect for mystery fans, Cluedle - The Case of the Grindstone Goblet is a funny, mystery puzzle book for code-cracking families and skilful young super sleuths. The ideal activity book for holidays, car journeys and rainy days! Team up with world-famous private investigator Hartigan Browne and solve 60 fun brain-busting puzzles to help the headmaster...
    Paperback
    $2299
    Available
    Ships in 4-6 weeks
  • Cluedle - The Case of the Golden Pomegranate
    Pre-order
    Cluedle - The Case of the Golden Pomegranate
    Can you work out Cluedunnit? For mystery fans of all ages, Cluedle - The Case of the Golden Pomegranate is the perfect puzzle book for code-cracking families and skilful young super sleuths. Set sail on the high seas with world-famous private investigator Hartigan Browne and crack the curious case of the Golden Pomegranate by solving 50 fun brain-busting puzzles. A...
    Paperback
    $1500
    Elsewhere:
    $1700
    Pre-order
    Out 2 Feb 2027
  • Cluedle - The Case of Rudolph's Revenge
    Can you work out Cluedunnit at Christmas? A perfect gift or stocking filler for mystery fans, Cluedle - The Case of Rudolph's Revenge is a fantastic festive puzzle book for code-cracking families and skilful young super sleuths. Team up with world-famous private investigator Hartigan Browne and crack the curious case by solving 80 fun brain-busting Christmas puzzles. Packed full of...
    Paperback
    Sold Out
  • Cluedle - The Case of the Golden Pomegranate
    Set sail on the high seas with world-famous private investigator Hartigan Browne and crack the curious case of the Golden Pomegranate by solving 50 fun brain-busting puzzles. A funny and intriguing mystery story set on a super yacht where detectives need to discover: Who broke into Alota Vibratto's safe? How the professor's milkshake was poisoned? What's hidden in an ancient...
    Paperback
    Sold Out
  • Cluedle - The Case of the Silver Cipher
    The Hartigan Browne Detective Agency has been contacted by London's Secret, Secret Service (so secret, that even the Secret Service doesn't know about them) to help locate the whereabouts of a missing agent who was in possession of the top secret object known only as the Silver Cipher. Finding the cipher is a matter of national security, and will take...
    Paperback
    Sold Out

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