

A young man returns from Rome to his sister's satanic New York apartment house.
Cinematography
Deep reds and electric blues that would make Mario Bava weep.
Score
Keith Emerson's prog-rock organ freakouts = pure panic energy.
Practical Effects
Underwater ballroom scene shot in a flooded set, no CGI.

Director
Dario Argento
Trivia, insights & behind the scenes
The flooded ballroom sequence was shot in Rome's De Paolis Studios with a specially constructed tank; actress Irene Miracle actually held her breath for extended takes in freezing water.
Part of Argento's unofficial 'Three Mothers' trilogy alongside Suspiria and The Mother of Tears, Inferno was initially panned but is now revered as perhaps the most visually excessive entry.