"The Probe" was the final episode of the original The Outer Limits television show. It first broadcast on 16 January 1965, during the second season.

En route to Tokyo, a plane flies into a storm and the pilot is forced to ditch the plane into the eye of a hurricane. The crew and passengers awake on a life boat and soon discover that they have been captured by an alien space probe.

The final episode of The Outer Limits deals with four plane crash survivors who suddenly find themselves trapped in an alien space probe that was taking water samples. Inside they find a puzzle they need to solve before all four are killed.

The passengers captured are Jefferson Rome, Amanda Frank, Coberly (the pilot), and Dexter.

They originally think that they're inside the eye of the hurricane and try to use the emergency radio. The four discover that they are not floating on the ocean, but are inside a foggy floor surface. The radio doesn't work. Once inside, the four are bathed in some sort of mist that emerges from a large circle atop a pedestal, which cleanses them and dries their clothing. Dexter is frozen within the light beam coming out of the same circle, but is rescued by the others before he is frozen completely. Dexter stays behind while the others begin to explore the inside of the probe.

Jefferson Rome and the others discover a room with an alien telemetry system. The probe is drawing up seawater. Jefferson Rome remembers the space probe Surveyor, used to study other nearby planets such as Venus, Mars and Jupiter. The three survivors themselves are being held captive in antiseptic chambers, where they are prey to some strange mutant microbes. Such a mutant microbe, larger than a person, attacks Dexter, and presumably consumes him, as the others are exploring the probe. Rome begins to surmise that the raft was being subjected to testing and they got in the way. Rome, Amanda Frank and Coberly discover the giant microbe, but it is zapped by the alien's freeze beam. It splits off a portion of itself to survive.

Jefferson Rome, looking at data in the Analog Room, begins to notice a pattern - that the probe moved from world to world, using some sort of space warping drive system. The microbe may have gotten inside. They see a screen transmitting symbols, and Rome begins attempts at communicating by altering the sequence of the alien symbols.

Meanwhile, the microbe tries to attack Coberly, but is held off by Jefferson Rome and Amanda Frank. The alien circle begins to transmit light beams in sequence. The probe then captures three of the humans in transparent tubes to sterilize them and protect them from the microbe. The probe then prepares its lift procedures. While Coberly goes to use the radio, Rome and Amanda attempt to communicate by figuring out the alien symbols. Outside the Analog Room, Coberly is enveloped in an alien mist and disappears. Jefferson Rome leaves the Analog Room to look for Coberly. He, too, disappears in the alien mist.

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