One of my major complaints about “The Twilight Zone” is the ending reveal somehow distracts from the rest of the episode. It’s a “gotcha” moment. And The Invaders does have a gotcha moment, and it does shuffle star Agnes Moorehead off-screen ingloriously, but at least it doesn’t do anything to undercut her performance.

The episode begins with host Rod Serling explaining we’re at a farmhouse, not unlike many other farmhouses, except this one doesn’t have electricity. And its sole occupant, Moorehead, has lived on her own for many years. That detail seems to be setting up Moorehead not to have any dialogue. Throughout the episode, as she becomes more and more agitated, she gets more and more vocal, but there’s a hard limit.

The “no electricity” detail allows for much of the episode’s terror. Moorehead goes from hearing sounds on the roof to battling the unexpected–tiny little alien men. The aliens have heat weapons, which cause welts–one of Moorehead’s best scenes (in twenty-some minutes of great scenes) is when she’s silently discovering her injuries and trying to dress the wounds. They may or may not jet pack technology. The episode’s definite about how many Invaders Moorehead has to fight, but it also likes having danger behind every door, around every corner. It’s dark, after all, and there are going to be noises from their spacesuits, so why not amp it up?

Heyes does a fantastic job directing the episode, embracing the limited lighting–Moorehead’s on a quest for survival through the unseen familiar, but with new danger. Most of the episode showcases Moorehead’s performance. There are a handful of action set pieces; otherwise, it’s all about Moorehead’s expressions of fear, determination, and anger. With the scant details Serling delivers at the opening, we’re able to contextualize Moorehead’s experience until the twist, which intentionally turns it over.

Outstanding teleplay from Richard Matheson. Did he write all the little moments for Moorehead or were they actor’s prerogative? There are certain story beats–finding the spaceship, losing this candle or that candle, planning scenes–but when it’s not an effects sequence, Invaders feels more like Moorehead’s doing a one-person show and showing off. She’s spellbinding.

The special effects are adorable. The aliens are just mechanized toys, which someone had a great time making ambulatory. They mostly stand still and shoot at Moorehead with their phasers or whatever, but every once in a while it’s like somehow tossed them across the shot and–whee–jet packs.

The ending twist changes the entire episode–Rod Serling’s got to be the least reliable narrator in television history–but Moorehead’s already done such fantastic work, there’s no lessening factor. Also–highly recommend watching with the lights out. Heyes and cinematographer George T. Clemens clearly meant it to be an uncanny tale for the dark.

Oh, and the Jerry Goldsmith score is excellent, too.

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