First MARROWBONE Trailer Experience the first MARROWBONE trailer! The film, written and directed by Sergio G. Sánchez, stars George MacKay, Anya Taylor-Joy, Mia Goth, and Charlie Heaton. MARROWBONE will be released in theaters on April 13. A young man and his three younger siblings, who have kept secret the death of their beloved mother in order to remain together, are plagued by a sinister presence in the sprawling manor in which they live.