The Devil Within (Spanish: Caminando con el diablo, lit. 'walking with the Devil') is a 2026 rural thriller film directed by Rubén Pérez Barrena and co-written by Jesús Miguel Quintana. It stars Tamar Novas, Marina Salas, Iván Marcos, Annick Weerts, and Alban Petit. It is a Spanish-Uruguayan co-production.