Welcome to the world of a super-machine which has thousands of eyes, can extract fluid from almost anything, and can run across the ceiling as quickly as it can run across the floor. When it takes to the air, it can hover, rotate on a sixpence and even fly backwards. Its insanitary and blood-sucking habits have killed billions of people, and it's one of humanity's oldest enemies. Welcome to the world of the fly. Producer Jeremy Grange
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