A new version of Suspiria came out in 2018, but I have not seen that. Instead, early last year, I saw the 1977 original when it was blessed with a limited cinematic re-release. The plot of this Dario Argento directed classic is simple enough (young American dancer (appealingly played by Jessica Harper) takes up place at German advanced ballet school, at which point spooky and lethal things start to happen). However it is not the plot that makes this film so remarkable but rather the art direction (in particular the lurid colour palette) and the integration of the soundtrack by Goblin (credited as The Goblins). The latter is so integrated into the film’s sound design that with it conjures forth a great sense of unease, with its whispers and disconcerting synth sounds feeling like they are happening within the film rather than an accompaniment to it. The film is so perfect in these regards that seeing this put me right off wasting my time with the recent remake, whose existence feels like another example of an intellectually bankrupt cinema industry looting the films of the past because it cannot come up with new ideas.
One other thing is maybe worth noting. Before seeing Suspiria I had the vague sense that it was some class of high class exploitation schlock, with the setting in what is basically a finishing school for buff young ladies providing an opportunity for lots of scenes in which said young ladies help each other in an out of their outfits. Yet despite being made in the 1970s, that sleaziest of decades, there is a notable lack of female skin on display in the film (misogynist readers will however be pleased to hear that a number of women characters in the film are murdered in manners both bizarre and gruesome).
image source (Michael Murphy Home Furnishing: The Red World of Suspiria (1977))