The fourth and last book in the series about Sandra, Monika, Sigurd, and the mysterious Prince Carvallo. Finally, the children manage to help Carvallo find his own planet, but nothing is as they imagined. The planet is inhabited by dragons and Carvallo‘s people have fled. How are they going to survive here? About the author Peter Gotthardt was born in Denmark close to Copenhagen in 1946. As a child he loved to read, and spent much of his time reading his was through his local libraries collections of history and adventure books. Gotthardt has written more than 60 books for children of which many are set within the realm of the Elves.