La grieta
[desconocido]Science fiction cinema, which has had so little trajectory in the Spanish industry, had in Juan Piquer a skillful director of the formats of this genre in its B series version. This film, which also approaches horror cinema, has its best value in the work of staging the interiors of the submarine, which is another protagonist of the plot, and in Mariné's photography that helps to make credible an environment of fantastic and supernatural elements.