Erich Anderson as MacDuff
Michelle Forbes as Ro Laren
Liz Vassey as Kristin
Erick Weiss as Crewman
Majel Barrett as Computer Voice
Synopsis: A mysterious force causes the crew of the Enterprise to lose their memories of who they are, where they are and what their mission is. They soon come to believe that they have been ordered to penetrate into the heart of the Lysian system and to destroy them. As they struggle to regain their lost memories, they struggle against the moral conflict of totally destroying a race that clearly is not their technological equal.