LasseMaja detective agency

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Detective Agency LasseMaja (Swedish: Lasse-Majas detektivbyrå) is a Swedish children's book series. The books are aimed primarily at children between the ages of 7 and 9. The first book was published in 2002 and there are now almost 30 books. The books are written by Martin Widmark and illustrated by Helena Willis.

The books are about the two children Lasse and Maja, who have a detective agency and have already been able to solve many cases. You live in the fictional town of Valleby. You help the small town police inspector solve tricky cases.