Curse of the Fly is a 1965 American horror science-fiction film and a sequel to Return of the Fly (1959), as the third installment in The Fly film series. It was released in 1965, and unlike the other films in the series was produced in the United Kingdom. The film was directed by Don Sharp and the screenplay was written by Harry Spalding. Curse of the Fly was rarely seen for many years, as it was the only entry in the Fly film trilogy that did not receive a videotape, laserdisc or online release. It did not receive its home video premiere until 2007, when it was released in a boxed set with the original series of films. Plot Martin Delambre is driving to Montreal one night when he sees a young girl by the name of Patricia Stanley running in her underwear. They fall in love and are soon married. However, they both hold secrets: she has recently escaped from a mental asylum; he and his father Henri are engaged in radical experiments in teleportation, which have already had horrific consequences. Martin also suffers recessive fly genes which cause him to age rapidly and he needs a serum to keep him young. In a rambling mansion in rural Quebec, Martin and Henri have successfully teleported people between there and London, but the previous failures resulted in horribly disfigured and insane victims who are locked in the stables. Martin's first wife Judith is one of them, as are Samuels and Dill, two men who had worked as the Delambres' assistants. Martin's brother Albert mans the London receiving station but wishes to terminate the teleportation project and escape the obsession that has driven his grandfather, his father and his brother. The police and the headmistress of the asylum trace Patricia to the Delambre estate, where they learn that she has married Martin, but it is soon discovered that he had a previous wife whom he did not divorce. Inspector Charas, who had investigated Andre Delambre and is now an old man in the hospital, tells Inspector Ronet about the Delambre family and their experiments. As the police begin to close in, a mixture of callousness and madness afflicts the Delambres, and they decide to abandon their work and eliminate the evidence of their failures. They subdue and teleport Samuels and Dill, but upon reintegration in London the two men are fused