Invaders from Mars (1953 film)

Invaders from Mars is a 1953 American science fiction film independently produced by Edward L. Alperson Jr. and directed by William Cameron Menzies. The film stars Jimmy Hunt, Helena Carter, Arthur Franz, Morris Ankrum, Leif Erickson, and Hillary Brooke and was distributed by Twentieth CenturyFox Film Corp. It was developed from a scenario by Richard Blake that was based on a story treatment by John Tucker Battle, who was inspired by a dream recounted by his wife.

With the help of local astronomer Dr. Stuart Kelston Arthur Franz and Dr. Blake, David soon realizes the flying saucer is likely the vanguard of an invasion from the planet Mars, now in close orbital proximity to Earth. Dr. Kelston contacts the U. S. Army and convinces them to immediately investigate an important government rocket research plant is located nearby. In short order, the Pentagon assembles troops and tanks under the command of Colonel Fielding Morris Ankrum. An alien sabotage plot at the plant is soon uncovered, leading back to the sandpit, and the army surrounds the saucer landing site.Standing well away from the army search, Dr. Blake and young David are suddenly sucked underground. They are captured by two tall, sliteyed green humanoids and taken through underground tunnels to the flying saucer. Army troops locate and blow open an entrance to the tunnels, and Colonel Fielding and a small detachment make their way to the saucer entrance. Inside they confront the Martian mastermind it has a giant green head with a humanoid face atop a small, green partial torso with several green armtentacles, and is encased in a transparent sphere. The Martian is served by the tall, green, silent mutants. Under their masters mental commands, the mute humanoids have implanted mindcontrol crystals at the base of the skull of their kidnapped victims, forcing them to attempt sabotage at an atomic rocket project being built at a military plant near the town if they are caught, the mind control devices implode, causing a fatal cerebral hemorrhage. The troops and Colonel Fielding, with Dr. Blake and David in tow, open fire on the pursuing mutants as their group escapes the saucer. After a short running battle in the tunnels, they get back to the surface. Orders are given for everyone to quickly leave the area Fieldings troops have planted timed explosive charges aboard the saucer. ........

Source: Wikipedia