Detective Club / Season 1 Season guide Detective Club: Season 1 12 episodes Premiered Jan 23, 2017 Updated Aug 21, 2026 Spoiler-safe Advertisement Episodes S1·E1 Episode 1 Jan 23, 2017 · 26 min S1·E2 Episode 2 Feb 4, 2017 · 28 min S1·E3 Episode 3 Feb 11, 2017 · 25 min S1·E4 Episode 4 Feb 18, 2017 · 24 min S1·E5 Episode 5 Feb 25, 2017 · 34 min S1·E6 Episode 6 Mar 4, 2017 · 25 min S1·E7 Episode 7 Mar 11, 2017 · 23 min S1·E8 Episode 8 Mar 18, 2017 · 19 min S1·E9 Episode 9 Mar 25, 2017 · 28 min S1·E10 Episode 10 Apr 1, 2017 · 29 min S1·E11 Episode 11 Apr 8, 2017 · 23 min S1·E12 Episode 12 Apr 15, 2017 · 29 min