Children's Books (ages 8-12)Novels

Gizli Formül Hangi Zarfta!
In Which Envelope Is The Secret Formula?

Gülsevin Kıral

Illustrator: Anıl Çağatay
Editor: Müren Beykan

A great novel from an author who brings the mysterious touch of detective stories to children’s literature!

In this novel, Gülsevin Kıral, one of the most interesting author of children’s books, tells the startling, incredible and amusing conspiracy theories of two friends who are about to take the high school entrance exams. The fast moving incidents are narrated with a simple yet powerful language.

Two friends who make wild plans with their unlimited imagination get into all sorts of trouble and at the same time discover important clues about life.

The award winning author with her detective stories, offers a rapid and enjoyable reading experience to her child readers tackling the themes of school, exam preparation institutions and tests.


Engin finds an envelope that the science teacher dropped while going out of the classroom. It says “PERSONAL” on the envelope. This marks the beginning of a fascinating adventure for Engin with extensive imagination skills. Although he tries to give the envelope back to his teacher in the beginning, they are influenced by the wicked scenario they have developed with his friend Emir. When they come across with one more mysterious envelope they felt more determined to solve this secret. However, a completely unexpected, surprising denouement awaits the children.

Gülsevin Kıral

Gülsevin Kıral

She was born in Eskişehir in 1959. She graduated from Boğaziçi University, Department of Economics and worked in the banking sector for many years. Her articles were published in various literary journals and she has translation works. Her books Ablami Nereye Kacirdilar published in 2006, and Berber Pire Tellal Deve (When Fleas were Barbers and Camels were Brokers) published by Günışığı Kitaplıği in 2008, received awards. After her book titled Posta Kutumdan Sihir Cikti (2006), the humor and mystery themed […]
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8th edition
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112 pages
120x180 mm
1st edition: 2007
22nd edition: 2022
ISBN: 978-975-6227-96-1
Barcode: 978 975 6227 961


adventureinter-family communicationday dreaminglife at schoolmysterious incidentsprivate teachinginstitutionsgrowing up

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