Albrecht H. Gralle was born in Stuttgart, Germany. After receiving a master's degree in theology, he worked as a Baptist minister and lecturer in several positions in Germany and Sierra Leone. He started writing and publishing short stories in 1980, and later expanded into novels and children's books, some of which have been translated into other European languages. In August 1993, Gralle became a full-time freelance writer. He lives with his wife Ingrid in Northeim, near Hanover, Germany. The couple has two daughters and two sons.

Friederike Gralle was born in Hamburg, Germany. As a child, she lived in Sierra Leone, West Africa, then went on to study languages in Leipzig, Germany, and Granada, Spain. She currently lives in Berlin, Germany, where she works as a freelance translator while going to school for screenwriting.

Sally Blakemore is a children's book author, illustrator, award-winning pop-up book designer, and marimbist who has traveled the world printing her pop-up books and enjoying the amazing cultures of our planet. She has spent the last twenty years in Santa Fe, New Mexico, with her husband Rusty and their menagerie of animals.