Christelle Dabos was born on the Côte d'Azur in 1980 and grew up in a home filled with classical music and historical games. She now lives in Belgium. The Mirror Visitor, her debut series, won the Gallimard Jeunesse-RTL-Télérama First Novel Competition.

Hildegarde Serle graduated in French from Oxford University. After working as a newspaper subeditor in London for many years, she obtained the Chartered Institute of Linguists Diploma in Translation. Based in London, her heart still lives on the Quai aux Fleurs in Paris.