In this gripping Spanish horror film directed by Jaume Balagueró, a television reporter and her cameraman are documenting the night shift of a local fire station when they are called to an apartment building. What begins as a routine emergency call quickly spirals into a terrifying ordeal as they find themselves trapped inside the building, facing an unknown and deadly threat. The film is renowned for its intense atmosphere and innovative use of the found footage style, which adds to the realism and suspense. It has been praised for its ability to maintain tension and deliver genuine scares. For those interested, the movie can be viewed for free on 123Movies / Movies123.