Watch The Dangers of the Fly (1920) : Full Movie Online Free The Dangers of the Fly is an educational film made by Ernesto Gunche and Eduardo Martínez de la Pera, also responsible for Gaucho Nobility (1915), the biggest blockbuster of Argentinean silent cinema. De la Pera was a talented photographer, always willing to try new gadgets and techniques. This film experiments with microphotography in the style of Jean Comandon's films for Pathé and it is part of a series which included a film about mosquitoes and paludism and another one about cancer, which are considered lost. Flies were a popular subject of silent films and there are more than a dozen titles featuring them in the teens and early twenties.