BBC Horizon - Temporada 4
Ep. 1 - 17/01/1967
Ep. 2 - 31/01/1967
Ep. 3 - 14/02/1967
Ep. 4 - 28/02/1967
Ep. 5 - 14/03/1967
Ep. 6 - 28/03/1967
Ep. 7 - 11/04/1967
Ep. 8 - 25/04/1967
Ep. 9 - 09/05/1967
Ep. 10 - 23/05/1967
Ep. 11 - 06/06/1967
Ep. 12 - 20/06/1967
Ep. 13 - 04/07/1967
Ep. 14 - 18/07/1967
Ep. 15 - 12/09/1967
Ep. 17 - 26/09/1967
Ep. 18 - 10/10/1967
Ep. 19 - 24/10/1967
Ep. 20 - 17/11/1967
Ep. 21 - 21/11/1967
Ep. 22 - 05/12/1967
Ep. 23 - 12/12/1967
Ep. 24 - 24/12/1967