Lucile Hadzihalilovic Director, Screenwriter Paul Hilton Albert Actor Romola Garai Celeste Actor Alex Lawther Laurence Actor Romane Hemelaers Mia Actor Martin Verset Young Albert Actor Anastasia Robin Marie Actor Peter Van den Begin The Stranger Actor Michael Pas The Dentist Actor Isabelle de Hertogh The Concierge Actor Marie Bos The Receptionist Actor Geoff Cox Screenwriter Jean des Forêts Producer Amélie Jacquis Producer Andrew Starke Producer Christophe Hollebeke Executive Producer Jonathan Ricquebourg Cinematographer Adam Finch Film Editor Nicolas Becker Original Music Julia Irribarria Production Design Julien Dubourg Art Director Jeanne Fonsny Set Decoration Nanw Rowlands Casting