Aktenzeichen XY… ungelöst / Season 1 Season guide Aktenzeichen XY… ungelöst: Season 1 12 episodes Premiered Oct 20, 1967 Updated Jul 21, 2026 Spoiler-safe Advertisement Episodes S1·E1 Episode 1 Oct 20, 1967 · 90 min S1·E2 Episode 2 Nov 24, 1967 · 90 min S1·E3 Episode 3 Jan 19, 1968 · 90 min S1·E4 Episode 4 Mar 15, 1968 · 90 min S1·E5 Episode 5 Apr 19, 1968 · 90 min S1·E6 Episode 6 Jun 7, 1968 · 90 min S1·E7 Episode 7 Jul 5, 1968 · 90 min S1·E8 Episode 8 Aug 2, 1968 · 90 min S1·E9 Episode 9 Sep 13, 1968 · 90 min S1·E10 Episode 10 Oct 25, 1968 · 90 min S1·E11 Episode 11 Nov 29, 1968 · 90 min S1·E12 Episode 12 Dec 20, 1968 · 90 min