耶尔迈斯托·加斯塔尔迪，Graduated in direction and screenwriting at Centro Sperimentale di Cinematografia of Roma in 1957 and in Economy in 1967. He wrote more than one hundred movies of all kind and a dozen of novels. He signed some scripts and his SF novels as Julian Berry. Married in 1960 the actress Mara Maryl and he directed his wife in many movies.