La ciudad perdida
Rafa, a Communist Republican exiled after the Spanish Civil War, returns to his hometown to carry out an attack against the imposed tyrannical regime, but the mission fails and, in his attempt to escape, he kidnaps a lady of high society.
Starring Cosetta Greco, Fausto Tozzi, María Dolores Pradera, Félix Dafauce, Nani Fernández, Manolo Morán, Santiago Rivero, Alessandro Fersen, Emma Baron
Watch "La ciudad perdida" on FlixOlè released in 1955. It's a drama and thriller movie, and has a rating of 5.4 out of 10 from Imdb which is fairly okay for this kind of movie.