Principal photography on The Entity began in Los Angeles on March 30, 1981, and the modest independent production quickly encountered a very real, non-supernatural hazard. During the filming of a scene in which Carla Moran’s teenage son Billy is violently hurled backward by the invisible entity, actor David Labiosa accidentally broke his wrist. The injury temporarily halted the ten-week shoot and forced director Sidney J. Furie and screenwriter Frank De Felitta to remove Labiosa from several planned scenes. The accident was particularly awkward because the film depended on making an unseen attacker appear physically convincing: the crew had to choreograph performers, props, and practical effects so that furniture, bodies, and objects seemed to move under invisible pressure. Labiosa’s injury became one of the production’s most concrete examples of how the film’s elaborate illusion of supernatural violence could still produce genuine physical consequences.
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