Sergio G. Sánchez Director, Screenwriter George MacKay Jack Actor Anya Taylor-Joy Allie Actor Charlie Heaton Billy Actor Mia Goth Jane Actor Matthew Stagg Sam Actor Kyle Soller Tom Porter Actor Nicola Harrison Rose Actor Laura Brook Thelma Actor Tom Fisher Simon Fairbairn Actor Belén Atienza Producer Álvaro Augustin Producer Ghislain Barrois Producer J. A. Bayona Producer Sandra Hermida Executive Producer Paloma Molina Executive Producer Xavi Giménez Cinematographer Elena Ruiz Film Editing Fernando Velázquez Original Music Patrick Salvador Production Design Jaime Anduiza Art Director Sonia Grande Costume Design Karen Lindsay-Stewart Casting