A 1967 kaiju film directed by Haruyasu Noguchi. The reporters cage the creature and take it to Japan where it becomes a media attraction. This angers the natives of the island and Gappa's full-grown parents, who head toward Japan to find their child. The film was released theatrically in Japan in 1967 as Daikyojû Gappa and/or Gappa: The Triphibian Monster. The film was never released theatrically in the United States. American International Television had the film shown on television where it premiered in 1968 as Monster from a Prehistoric Planet. Film is in public domain in the United States.
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https://www.youtube.com/watch?v=WKhDrDBqgzQ
During a heat wave, a mob forms to go after a local hoodlum when a girl claims that a man attacked her. But Mike, who was in the vicinity just before it happened, saw the girl go into the alley with a woman, not a man.
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https://www.youtube.com/watch?v=Ty5o9lVIuPE
SHADO pilot Jim Reagan is on leave and whilst driving down a country road with his wife at night, he sees a Siamese cat blocking his way. When he gets out to tend to the cat, he is rushed by aliens who abduct him and operate upon him. As a consequence, when he is returned to Earth he is totally under the influence of the cat and its commands - and the cat is at SHADO headquarters.
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https://www.youtube.com/watch?v=GrweuaAYD1I
While heading out to celebrate their fifth wedding anniversary, the Norths receive a package containing bride and groom dolls--and the bride has a bloody dagger stuck in her back. Suddenly, there's a scream from the hall and in falls a neighbor in her bridal gown, stabbed to death. Confusing matters more, an old woman with a gun arrives demanding the dolls back, saying they were delivered to the Norths by mistake.
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https://www.youtube.com/watch?v=ToeF2IlhUDM
Scientists (Victor Kilian, Bruce Kellogg, Otto Waldis) drill down in a "cyclotram" to find a fallout shelter at the center of the Earth.
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https://www.youtube.com/watch?v=otXhdWDM6N8