An idyllic that has lasted for more than a decade, a happy marriage, author and director on screen: with Mauvaise Fille — selected for the Goncourt Prize and adapted in 2012 to the film in film that reveals Izïa Higelin, César of the Best Hope — Justine Lévy and Patrick Mille open the black box of adaptation lived to two. How to “trahir” a book to better make it born in cinema? Who says no, who says yes, and what? Where to place the red line between fidelity and invention when the intimate is shared? A frank conversation about the trust, power of the last word (the page or the plan) and how love protects... or breaks creation.