Special Guest Stars Eleanor Parker as Margitta Kingsley Dan O'Herlihy as Prof. David Garrow Guest Stars Peter Mark Richman as Webb Richard Bull as Captain Gelser Leslie Nielsen as General Maximilian Harmon Barry Sullivan as Dr. Robert Kingsley Albert Paulsen as Dr. Kurt Erikson David Hurst as Jan Vanovech Tony Bill as Steve Garrow Inger Stratton as Anna Erikson Arthur Hanson as Jeffrey Mackie Co Starring Richard O'Brien as Air Chief Frank Babich as Sergeant Annella Bassett as Dr. Naomi Fisher George Fenneman as Newscaster