El secreto de Marrowbone
- Taon: 2017
- Bansa: Spain, United States of America
- Genre: Thriller, Horror, Mystery
- Studio: Telecinco Cinema, Marrowbone, Ruidos en el Ático, Mediaset España, Universal Pictures, Lionsgate, Movistar+
- Keyword: beach, sibling relationship, library, rifle, abandoned house, flashback, murder, mental illness, attic, morse code, 1960s, orphan siblings, fear of mirrors, intense, distressing, tragic
- Direktor: Sergio G. Sánchez
- Cast: George MacKay, Anya Taylor-Joy, Charlie Heaton, Mia Goth, Matthew Stagg, Nicola Harrison