The Outer Limits

Convict Chino Rivera (Henry Silva) has choice: life in prison or be a guinea pig for a scientific "inhabitant exchange" between Earth and the planet Chromo. Already, a Chromite -- a grotesque, jellied mass with crab-like claws and a slavering maw -- has been teleported to our planet and is roaming the laboratory compound. But when Chino discovers that the alien is hungry for something other than scientific knowledge, he finds the fate of the Earth might just be in his own hands.