Sezon 4
Bölümler
1 Catherine the Great/Oliver Cromwell/Daniel O'Connell, Part 1 29 Mar 1981 2 Catherine the Great/Oliver Cromwell/Daniel O'Connell, Part 2 5 Nis 1981 3 Leonardo da Vinci/William Blake/Niccolo Paganini, Part 1 12 Nis 1981 4 Leonardo da Vinci/William Blake/Niccolo Paganini, Part 2 19 Nis 1981 5 Margaret Sanger/Mahatma Gandhi/Adam Smith, Part 1 26 Nis 1981 6 Margaret Sanger/Mahatma Gandhi/Adam Smith, Part 2 3 May 1981