Special Guest Stars Dan O'Herlihy as Prof. David Garrow Eleanor Parker as Margitta Kingsley Guest Stars Peter Mark Richman as Webb Leslie Nielsen as General Maximilian Harmon Richard Bull as Captain Gelser Albert Paulsen as Dr. Kurt Erikson David Hurst as Jan Vanovech Tony Bill as Steve Garrow Barry Sullivan as Dr. Robert Kingsley 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