What actors and actresses appeared in Doppelganger - 1979?

There is no movie called "Doppelganger" from 1979. It's possible you might be thinking of a different film or the year is incorrect.

Can you provide more details about the film you're looking for? For example:

* Is there another title you remember?

* What is the genre of the film? (horror, comedy, etc.)

* Do you remember any other details about the plot or the actors?

With more information, I can help you find the movie you're looking for.