There was a TV movie/miniseries from the 80’s that I’m trying to remember the name of. It was in English and in color. I could’ve sworn it starred Michael Douglas, and possibly Daryl Hannah or Kim Basinger. The woman was an alien who crash landed on Earth to escape another alien creature (not in human form) who was hunting her. She ends up seducing the man in order to gain his help in destroying the creature. The final showdown occurred in either a sewer or a subway train tunnel.
Something is Out There (1988)?
That’s it!! Thanks. I was really off about the cast, but the guy did look a lot like Michael Douglas at the time. (Not so much now, however.)
Solved!