I have asked this question before but I figure if its freshly posted than mabe someone who recognizes it may know the answer. This was an episode from a show I don't remember, I thought it may be the outer limits or amazing stories, but I don't think its either. There is a radio show host, and he is interviewing people with interesting stories. One of the people is a woman with a weird creature in a cage. The creature looked like a cross between a person and a demon. She said she was naked on the beach when she encountered it. It has no mind of its own, instead it takes the mind of other people and when it finds a new mind, the mind it has is erased.

Season 3 of the series "Monsters" episode called "A face for radio"

The plot is as follows:

Ray Bright (Morton Downey, Jr.) is a late-night "hate radio" talk show host who interviews Cassandra Lefkowitz (Julie Wilson), a psychic who can tell the future. She warns him that she had a vision of him in a dark room writhing in pain, but he dismisses her prediction. His next guest is the beautiful Amanda Smith-Jones (Laura Branigan), who says she was sexually assaulted by aliens. She shows Bright a cage, in which there is a horribly disfigured small creature which begs for help. The creature, she says, eats evil but can only do so when evil volunteers to be eaten. The ever-skeptical Bright isn't sure what to believe. Will he volunteer to test Amanda's claims?

Written and directed by Bruce Feirstein. Aired Feb 3 1991