MÅRTEN SANDÉN was born in Stockholm in 1962 and spent most of his childhood in the university town of Lund, in southern Sweden. He has been writing, in one way or another, more or less full-time since his early twenties.

Starting out as a professional songwriter for music publishers in Europe and the US, Sandén began writing children’s books in the mid-1990s. The Petrini Detectives, a series of mysteries for Middle Readers, was launched in 1999. Since then, he has written around thirty more children’s books, ranging from picture books to novels for Young Adults. His work has been translated into Danish, German, Russian and English.

Mårten Sandén is a member of The Swedish Academy of Children’s Book Writers and The Swedish Crime Writers’ Academy.

He lives in Stockholm with his wife and daughter.

MOA SCHULMAN has one foot in the world of images and another in text; she studied Literature and Linguistics at Stockholm University, and illustration and graphic design at Konstfack. She designs for print, illustrates for children, and publishes books in her own Dockhaven imprint.