Thomas Meyer was born in Zürich, Switzerland. After studying law for three semesters, he became a copywriter. Since 2007 he has made his living as a writer. In 2012 his highly regarded debut novel appeared. A film adaptation under the title The Awakening of Motti Wolkenbruch was released in 2018. The Little Christmas Tree is his second children's book. Thomas Meyer lives in Zürich. Philippe Goossens was born in Brussels, Belgium, where he still lives today.

Since completing his studies at the Institut Saint-Luc, Goossens has worked as a freelance illustrator, and for some time now has focused on books for children and young adults. At NorthSouth he is known above all as the illustrator of the Owl Howl books. The story of the howling owl chick is a NorthSouth classic. About his creative work he says, "When the crayon sets off on its great journey across the paper, the table vanishes, the walls disappear, and unexpected notes come in." Marshall Yarbrough is a writer, translator, and musician. He has translated works by Ulla Lenze, Norman Ohler, and Wolf Wondratschek, among other authors. He lives in New York City.