The Treasure Pack
The Polybius Square Mystery Letter
Published on 29. April 2026
Book
Paperback/Softback
32 pages
979-8-9950245-2-1 (ISBN)
Description
When Grandma and Poppa send their granddaughter a letter with a secret code, a fun mystery begins! Using a Polybius Square, she and her dad work together to solve the puzzle while their dogs, Rissa and Toby Tanner, happily join the adventure. Where will the hidden message lead them? Only the code can tell!
More details
Series
Language
English
Target group
Children/juvenile
Interest Age: From 4 to 8 years
Product notice
Paperback (trade)
Unsewn / adhesive bound
Dimensions
Height: 229 mm
Width: 152 mm
Thickness: 3 mm
Weight
86 gr
ISBN-13
979-8-9950245-2-1 (9798995024521)
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Schweitzer Classification