Season 20 aired between 22 Jan 1989 and 27 Dec 1989, 12 episodes.
Episodes
E01
Episode 1
22 Jan 1989
E02
Episode 2
19 Feb 1989
E03
The Pott
09 Apr 1989
E04
Episode 4
14 May 1989
E05
Episode 5
28 May 1989
E06
Episode 6
09 Jul 1989
E07
Episode 7
30 Jul 1989
E08
Blood trail
20 Aug 1989
E09
Episode 9
01 Oct 1989
E10
The New One
29 Oct 1989
E11
Schimanski - Katja's Silence
03 Dec 1989
E12
Episode 12
27 Dec 1989
E02
Episode 2
19 Feb 1989
E03
The Pott
09 Apr 1989
E04
Episode 4
14 May 1989
E05
Episode 5
28 May 1989
E06
Episode 6
09 Jul 1989
E07
Episode 7
30 Jul 1989
E08
Blood trail
20 Aug 1989
E09
Episode 9
01 Oct 1989
E10
The New One
29 Oct 1989
E11
Schimanski - Katja's Silence
03 Dec 1989
E12
Episode 12
27 Dec 1989