In "The Diamond Mystery #1" by Helena Willis, young detective agency founders Ruby and her best friend, Axel, are drawn into an intriguing case when a priceless diamond goes missing from a local museum. As they dive into the investigation, they uncover a web of suspicious characters and hidden secrets. With clever sleuthing and a keen eye for detail, they piece together clues, navigating through obstacles and red herrings. The duo’s friendship is tested, but their determination and resourcefulness help them solve the mystery, all while learning valuable lessons about trust, teamwork, and perseverance. [Generated by language model - please report any problems].

This book is part of a book series called The Whodunit Detective Agency .

This book is aimed at children at US 2nd grade-4th grade.

This book has been graded for interest at 7-9 years.

There are 80 pages in this book. This book was published in 2014 by Penguin Putnam Inc .

Martin Widmark is the bestselling Swedish children's author of over 100 books. His titles consistently top Sweden's bestseller lists and have been translated into more than thirty-five languages. Before becoming a full-time author, Martin worked as a middle-school teacher and a Swedish language teacher for immigrants, and now uses his experiences to promote reading and literacy for young people. Emilia Dziubak is an award-winning illustrator based in Poland. She is a graduate of The Academy of Fine Arts in Poznan and has illustrated numerous children's picture books that have been translated throughout the world.