Fiend Without a Face (1958)

The title is actually very strange, called the devil without a face, not only no face, ah, there is no whole body ah, called invisible is appropriate. In a typical horror film, the monster appears in a gradual and orderly manner. For the first time, there is only a dead body, but there is no sign of the monster, and the second time it vaguely sees the trail of the monster. However, it always gives people the hope that the monster is visible (if there is no spoiler), and the third time it uses stunts to depict the monster's presence, deliberately rendering its unknown and powerful. This way of plot progression is the usual rule of countless later horror films.