Guest Stars Jennifer Beals as Robin Dysart Mario Van Peebles as Captain William Clark Gerard Plunkett as Admiral Birch Ken Camroux-Taylor as Admiral Jones Guylaine St-Onge as Dr. Helene Dufour Roman Podhora as Commander Louis Vidwell Barry W. Levy as Colonel Bell Co Starring Patrick Keating as Technician Linden Banks as Dr. Thomas Somerset David Neale as Commander Richard Gordon Kathryn Anderson as Woman Tatiana Chekhova as Commander Lara Nabakov Alexander Pollock as Boy Zinaid Memišević as Young Man David Lloyd Austin as Admiral Sergei Yurov