A new trailer for the serial killer thriller The Invisible Guardian (El Guardián Invisible) has been released and can be seen below. The footage is very atmospheric, showing forests that are blanketed in fog as well as an overall dark, wet feeling, as though every scene takes place during a rainy evening.

The movie is based on the international best-selling Spanish novel by Dolores Redondo, which came out in 2015 and has swept Europe.

The naked body of a teenage girl is found on the banks of the River Baztán. Less than 24 hours after this discovery, a link is made to the murder of another girl the month before. Is this the work of a ritualistic killer or of the Invisible Guardian, the Basajaun, a creature of Basque mythology?

30-year-old Inspector Amaia Salazar heads an investigation which will take her back to Elizondo, the village in the heart of Basque country where she was born, and to which she had hoped never to return. A place of mists, rain and forests. A place of unresolved conflicts, of a dark secret that scarred her childhood and which will come back to torment her.

Torn between the rational, procedural part of her job and local myths and superstitions, Amaia Salazar has to fight off the demons of her past in order to confront the reality of a serial killer at loose in a region steeped in the history of the Spanish Inquisition.

Directed by Fernando González de Molina, The Invisible Guardian stars Marta Etura, Colin McFarlane, Miquel Fernández, Elvira Mínguez, and Javier Botet (Mama, It).

The film will come out in Spanish theaters on March 3rd, 2017. No news on a US release date as of yet.