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This Island Earth (1955)
(feddit.nl)
THE SUPREME EXCITEMENT OF OUR TIME!
Scientist Cal Meacham solves a mysterious puzzle that allows him access to a highly secretive program - led by the mysterious Exeter - that has assembled the world's greatest scientific minds in an attempt to quickly learn how to generate and store nuclear power. But with the help of his colleagues, Meacham soon discovers that his host is not who he claims to be.
It's the amazing Rando!
Don't try to move, the handles are magnetized…
Which would mean something if your hands were made of metal