Bassie en Adriaan: Het geheim van de sleutel - Season 1
1 - Episode 1
Air Date: October 9, 1978
2 - Episode 2
Air Date: November 6, 1978
3 - Episode 3
Air Date: November 16, 1978
4 - Episode 4
Air Date: December 1, 1978
5 - Episode 5
Air Date: January 1, 1979
6 - Episode 6
Air Date: January 29, 1979
7 - Episode 7
Air Date: March 26, 1979
8 - Episode 8
Air Date: May 3, 1979
9 - Episode 9
Air Date: May 21, 1979
10 - Episode 10
Air Date: June 3, 1979
11 - Episode 11
Air Date: June 30, 1979