Alas, no Sabrina!
I watched two video editions (U.S. and Japanese) of this movie, but Sabrina Siani is not in the credits, nor does she show up anywhere on screen. Too bad--it would have been great to see her as the twins. There also is no character in the film named Korah, her alleged role. I watched the sequel from the following year as well, just to see if the credits of the two films had been switched, but she's not there either. This is the second mistake in her imdb filmography (see my message on the AENIGMA board). I hope there are no more. It's s-s-s-o-o-o-o-o- disappointing.