An unhinged scientist has perfected a method of shrinking himself to the size of a fly, and uses his invention to revenge himself on former colleagues. An invisible laboratory assistant helps the police to track him down and foil his nefarious schemes.
Daei Studios were Toho’s main competition in the Japan’s Science Fiction arena during the 1950s and 1960s, and here they deliver an unusual mash-up of a mad scientist and a standard police procedural. So, on the one hand, we get familiar crime picture clichés such as tepid gunplay and a shady nightclub, but we’re also offered a floating head and a villain whose miniature size apparently allows him to fly!
Despite the outlandish elements, the script and cast play it completely straight. Things start off impressively with some inexplicable murders, which are slickly edited and quite unsettling. However, it doesn’t take too long before we know what’s going on, and any sense of mystery has been surrendered to some obvious, and pretty goofy, plot developments. Our young hero owes his invisibility to the side effects of a professor’s experiments into the effects of cosmic rays but his presence is a godsend to the local forces of law and order who find themselves up against it when dealing with our microscopic villain. There are some pretty huge gaps of logic if you look at things too closely, but it’s all acceptable enough if you’re prepared to go along for the ride.
The SFX are predictably variable, given the era when the film was made, although the invisibility is realised in the acceptable manner first pioneered by SFX technician John P Fulton in the golden era of Hollywood. Indeed, the production is professional in every department, and it’s no easy matter to point out any obvious flaws, but proceedings are simply never very creative or inspired. And exactly why the Human Fly makes a buzzing noise is a bit of a puzzle…
The Daei Studio never played more than second fiddle to Toho, despite plugging away for more than a decade. Probably their biggest success came with the ‘Majin’ series, which featured a giant statue come to life, but even that was a pale comparison to the global recognition enjoyed by Mothra, King Ghidorah and the Big G.