Clasificación IMDb: 5,2/10 (223 votos)
Director/es: Montgomery Tully
Reparto Zena Marshall (Como Sandy Lund), Simon Oates (Como Dr. Joe Burke), Charles Hawtrey (Como Joshua Yellowlees), Patricia Hayes (Como Mrs. Jones), Stanley Meadows (Como Ben Keller)
País: UK Estudio: Embassy Pictures
Duración: 77 minutos.
Género Ciencia Ficción
Argumento: Residents of a radio telescope laboratory are kidknapped when they answer a mysterious signal from outer space. They are taken to a satelite inhabited only by robots, where they are presented with a series of intelligence tests. Since this is a mystery as well as a sci-fi movie I will only say that the rest of the plot deals with theyre attempt to find out why they've been kidknapped, and how they will get back to earth.