Marc Petitjean is a writer, filmmaker, and photographer. He has directed several documentaries, including From Hiroshima to Fukushima, on Dr. Shuntaro Hida, a survivor of the atomic bombing of Hiroshima; Living Treasure, about Japanese kimono painter Kunihiko Moriguchi; and Zones grises, on his own search for information about the life of his father, Michel Petitjean, after his death.

Adriana Hunter studied French and Drama at the University of London. She has translated more than ninety books, including Marc Petitjean's The Heart: Frida Kahlo in Paris and Hervé Le Tellier's The Anomaly and Eléctrico W, winner of the French-American Foundation's 2013 Translation Prize in Fiction. She lives in Kent, England.