| Complete credited cast: | |||
| Jeff Morrow | ... | Dr. Leslie Gaskell | |
| Barbara Lawrence | ... | Vera Hunter | |
| John Emery | ... | Dr. Hubbell Eliot | |
| George O'Hanlon | ... | Dr. Arnold Culver | |
| Morris Ankrum | ... | Dr. Albert Stern | |
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Kenneth Alton | ... | McCrary - The Pickup Driver |
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John Parrish | ... | Gen. Perry |
| Jose Gonzales-Gonzales | ... | Manuel Ramirez (as Jose G. Gonzales) | |
| Richard Harrison | ... | Pilot | |
| Marjorie Stapp | ... | Nurse | |
| Robert Shayne | ... | Air Force General | |
| Don Eitner | ... | Weather Operator (as Donald Eitner) | |
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Gordon Mills | ... | Sergeant |
| John Halloran | ... | Lab Central Security Guard | |
Scientists investigate what appears to be a meteorite that crashes into the ocean. After a few days and nights of mysterious lights and noises, a giant machine comes out of the ocean. The machine is the creation of an alien race, that is trying to syphon energy from earth. A true classic, in that it is so different from anything in the time period. To this day, nothing else has come out like it. Written by Anonymous
"Kronos" is about a robot emissary (which Earth scientists name Kronos), sent by aliens to Earth. It lands on the coast of Mexico and goes on a rampage. The aliens have exhausted energy supplies on their own planet (which it is correctly noted may well happen here before too long), and so they sent Kronos to Earth to suck up energy from our remaining energy resources. Unknowingly, Earth counterattacks with weapons like an H-bomb, but Kronos greedily absorbs all that energy and just gets stronger and hungrier for more.
At this point, you just have to put aside the immediate obvious objection that there is far more energy in any star in the galaxy than in all the power plants on Earth, and the aliens should have just harvested energy from them.
If you can forget all that, what is left is an enjoyable typical 1950's B-movie, with what I consider to be some decent special effects for the time (except for the obvious cartoon animations of Kronos' march). Jeff Morrow, one of the better B-movie actors, delivers a decent performance as a scientist. Despite its low budget, the movie tries hard to be an early techno-thriller, replete with what was state-of-the-art technology for its time--B-47 jet bombers, missiles with nuclear warheads, computers, etc. And that also makes it a cut above the usual sci-fi B-movie of the 1950's.