This is a somewhat crazed and depraved giallo. The Anchor Bay DVD contains both the international and the American versions of the film. Both are very different. The U.S. version has a Vietnam War framing device similar to that used in Jacob's Ladder almost 20 years later. It also contains two more murders and is slightly more coherent than the international version, despite being about 20 minutes shorter. But both versions of Delirium are, well, delirious.
The film concerns a homicidal doctor who is a serial murderer of young women. Just when he starts to be questioned by police for his involvement in the killings another maniac starts a murdering spree that confuses the issue.
The whodunit aspect of this movie is a little obvious. So the mystery element is less important. Instead, the film works best as a demented series of shock scenes, all strung together by a loose plot. The editing is not very good but it adds a bit to the haphazard nature of the film as we are jerked around from scene to scene. The music score by Gianfranco Reverberi is very effective in sustaining the delirious atmosphere.
This is a very sexually explicit giallo. There is a multitude of female full-frontal nudity on display. The murder scenes are often pretty misogynistic, not something uncommon to the genre, but a little more extreme here than normal. There are also some well shot S&M dream sequences that feature writhing naked women! The plot is a little over-convoluted. Once again, this is a common giallo feature but, again, more-so here than normal. It can be quite difficult to follow the narrative as the story is all over the place. This fact is made even more apparent when watching both versions of the movie, you will see that scenes are ordered quite differently.
Overall, this giallo movie is weak on narrative but compensates for that with, well, excess. The effect is a film that is true to it's title. It really is delirious.
