Hasta el Viento Tiene Miedo (1968)

The title of this atmospheric Mexican horror film translates to mean "even the wind is scared," and indeed this consummate chiller is sure to frighten even the most stoic viewers. The action unfolds in a girls' school during vacation, when only a few students remain on campus. These include Claudia (Alicia Bonet), who is haunted by a recurring dream that takes place in a tower on the school campus. When she tells her friends about it, they decide to investigate the tower for themselves. It is forbidden territory, however, and when the despotic headmistress (Marge Lopez) finds out that the girls have trespassed, she punishes the girls severely. But the mystery deepens as Claudia continues to hear someone calling her name in the wind, and only one person seems able to help, a kind teacher who knows what really happened in that tower so long ago. A classic of the genre, this intelligent, eerie ghost story achieves maximum terror with minimal effects.