La Caja Kovak (or The Kovak Box) is a suspensfull sci-fi thriller. Even though it's all happening in Spain the movie is in English. Sci-fi not so for technical gadgets or CGI's, those aren't present, but more for the possible futuristic elements in the story. Good job from Daniel Monzón and Jorge Guerricaechevarría for writing a refreshing story in this genre. There is suspense throughout the entire movie so I don't really get why you would review this movie negatively. It's all there, a solid story that keeps you interested and a good cast with no bad acting at all. Daniel Monzón did a good job with this one, certainly worth watching if you like the mystery/thriller genre.