Cast & Crew
In the year 2015, spaceship IC-1 travels toward a planet with an atmosphere similar to Earth's to explore the possibility that the population problem on Earth can eventually be solved there. IC-1 's crew consists of Capt. Mead Ralston, his wife Jan, Drs. Steven and Helen Thomas, two other married couples, and four people in suspended animation. Helen is found to have an incurable pancreatic infection, but Ralston refuses to turn back; and when he denies her permission to have another child, she commits suicide. Steven and the other crew members mutiny and imprison Captain Ralston, but they are forced to succumb to Ralston when he threatens to destroy the ship. Ralston plans to execute Steven. Ignoring the warnings of the crew, he releases one of the "animates" by raising the temperature of the compartment in which it is suspended, and the "animate" kills him before dying. The ship goes on under Steven's leadership.
Robert L. Lippert
Released in Great Britain in June 1967. Spalding May have received screenplay credit under his pseudonym, Henry Cross. Sources disagree in crediting the role of Captain Burnett.