Alien Nation: Dark Horizon

Susanna Thompson plays Lorraine Clark in the film, a character previously played by Barbara Tyson (then known as Barbara Bush) in The Touch (1990) and Green Eyes (1990). With respect to returning characters, Tyson is the only actor from the series who did not reprise their role in the film.

Although this is a continuation of the series' final cliff hanger, the scene where Susan and Emily are poisoned, and the scene where Cathy tells Matt about it, are completely different.

The US video release contains several very brief scenes not shown on its first release on Fox Television in the U.S. For example, there's a brief addition to the scene where Ahpossno boards his craft. After you see the trolly in LA go by following Ahpossno's departure from the mother ship, you see the delivery man buying the flowers, and showing hate for Newcomers. A scene shows Penny welcoming the Franciscos home after their hospitalizaion.