A 'mad-scientist' in cinema's worst bald cap scatters a powder that distorts reality (although the film implies that the powder is applied to the subject, not the viewer, undercutting the obvious assumption of a drug metaphor). Of interest only for the very early application of distorting lenses and mirrors to simulate altered states (hallucinations?). The film must have seemed very strange when first released to a public and goes on much longer than the gimmick requires.. The bald cap is so ridiculous and unnecessary that perhaps it was an inside joke.
Review of La folie du Docteur Tube
