Sezon 3
Bölümler
1 Broken Melody 19 Eyl 1971 2 The Angry Man 3 Eki 1971 3 One Lonely Step 24 Eki 1971 4 Close Up 7 Kas 1971 5 The Convicts 21 Kas 1971 6 The Glass Cage 5 Ara 1971 7 Dagger in the Mind 19 Ara 1971 8 Moment of Crisis 2 Oca 1972 9 Short Flight to a Distant Star 23 Oca 1972 10 A Threatened Species 6 Şub 1972 11 Discovery at Fourteen 5 Mar 1972