visible on the other side, far in the distance. Crossing the water in an inflatable raft, they are stopped by a giant amoeba-like creature with a single spinning eye. They hurriedly retreat, the creature pursuing them. As they are entering their ship, the creature catches Jacobs and draws him inside the gelatinous body, soon absorbing him; it has also infected O'Bannion's arm. The creature envelops the ship and is expected to eventually develop acids to eat through it. O'Bannion leads them in rewiring the ship to electrify the outer hull, which drives the creature away after destroying parts of it, then they rewire the ship for lift-off. The three survivors manage to lift MR-1 off from the planet since the force field has somehow been deactivated. Unfortunately, Professor Gettell, the MR-1's designer, dies of an apparent heart attack caused by the extreme stresses of the ascent. Once the MR-1 returns to Earth, O'Bannion's infected arm is cured by medical staff using electric shocks. Mission control technicians also examine the MR-1's data recorders from the expedition and find a recording of an alien voice, which announces that the ship's crew were allowed to leave Mars so that they could deliver a message to their home planet. The voice then states that "we of Mars" have been observing human development on Earth for many thousands of years and have determined that humanity's technology has far outpaced progress in cultural advancement. The alien then accuses humankind of invading Mars, warning that if future expeditions ever return to the Red Planet, then the Earth would be destroyed in retaliation. Cast Gerald Mohr as Colonel Thomas O’Bannion Naura Hayden as Dr. Iris "Irish" Ryan Les Tremayne as Professor Theodore Gettell Jack Kruschen as Chief Warrant Officer Sam Jacobs Paul Hahn as Major General George Treegar J. Edward McKinley as Professor Paul Weiner Tom Daly as Dr. Frank Gordon Don Lamond as TV Newscaster/Martian Voice Edward Innes as Brigadier General Alan Prescott Gordon Barnes as Major Lyman Ross Jack Haddock a Lt. Colonel Davis Brandy Bryan as Nurse Hayes Joan Fitzpatrick as Nurse Dixon Arline Hunter as Joan (not in 83 minute version) Alean Hamilton as Joan's Friend (not in 83 minute version) Production The Angry Red Planet began as The Planet Mars, a treatment written by Sidney Pink about a space voyage to Earth's mysterious neighbor. "It was written on my kitchen table", Pink said