Old Boy / Season 1 Season guide Old Boy: Season 1 47 episodes Premiered Mar 4, 2018 Updated Aug 29, 2026 Spoiler-safe Advertisement Episodes S1·E1 Episode 1 Mar 4, 2018 · 45 min S1·E2 Episode 2 Mar 4, 2018 · 45 min S1·E3 Episode 3 Mar 5, 2018 · 45 min S1·E4 Episode 4 Mar 5, 2018 · 45 min S1·E5 Episode 5 Mar 6, 2018 · 45 min S1·E6 Episode 6 Mar 6, 2018 · 45 min S1·E7 Episode 7 Mar 7, 2018 · 45 min S1·E8 Episode 8 Mar 7, 2018 · 45 min S1·E9 Episode 9 Mar 8, 2018 · 45 min S1·E10 Episode 10 Mar 8, 2018 · 45 min S1·E11 Episode 11 Mar 9, 2018 · 45 min S1·E12 Episode 12 Mar 10, 2018 · 45 min S1·E13 Episode 13 Mar 11, 2018 · 45 min S1·E14 Episode 14 Mar 11, 2018 · 45 min S1·E15 Episode 15 Mar 12, 2018 · 45 min S1·E16 Episode 16 Mar 12, 2018 · 45 min S1·E17 Episode 17 Mar 13, 2018 · 45 min S1·E18 Episode 18 Mar 13, 2018 · 45 min S1·E19 Episode 19 Mar 14, 2018 · 45 min S1·E20 Episode 20 Mar 14, 2018 · 45 min S1·E21 Episode 21 Mar 15, 2018 · 45 min S1·E22 Episode 22 Mar 15, 2018 · 45 min S1·E23 Episode 23 Mar 16, 2018 · 45 min S1·E24 Episode 24 Mar 18, 2018 · 45 min S1·E25 Episode 25 Mar 18, 2018 · 45 min S1·E26 Episode 26 Mar 19, 2018 · 45 min S1·E27 Episode 27 Mar 19, 2018 · 45 min S1·E28 Episode 28 Mar 20, 2018 · 45 min S1·E29 Episode 29 Mar 20, 2018 · 45 min S1·E30 Episode 30 Mar 21, 2018 · 45 min S1·E31 Episode 31 Mar 21, 2018 · 45 min S1·E32 Episode 32 Mar 22, 2018 · 45 min S1·E33 Episode 33 Mar 22, 2018 · 45 min S1·E34 Episode 34 Mar 23, 2018 · 45 min S1·E35 Episode 35 Mar 24, 2018 · 45 min S1·E36 Episode 36 Mar 25, 2018 · 45 min S1·E37 Episode 37 Mar 25, 2018 · 45 min S1·E38 Episode 38 Mar 26, 2018 · 45 min S1·E39 Episode 39 Mar 26, 2018 · 45 min S1·E40 Episode 40 Mar 27, 2018 · 45 min S1·E41 Episode 41 Mar 27, 2018 · 45 min S1·E42 Episode 42 Mar 28, 2018 · 45 min S1·E43 Episode 43 Mar 28, 2018 · 45 min S1·E44 Episode 44 Mar 29, 2018 · 45 min S1·E45 Episode 45 Mar 29, 2018 · 45 min S1·E46 Episode 46 Mar 30, 2018 · 45 min S1·E47 Episode 47 Mar 31, 2018 · 45 min