Investigation Held by ZnaToKi (Season 1)

Episode 1 9.0

Air date: 1971-02-14

Runtime: 55 min

Episode 2 9.0

Air date: 1971-04-18

Runtime: 55 min

Episode 3 9.0

Air date: 1971-11-09

Runtime: 55 min

Episode 4 9.0

Air date: 1972-02-08

Runtime: 55 min

Episode 5 9.0

Air date: 1972-05-20

Runtime: 55 min

Episode 6 9.0

Air date: 1972-09-16

Runtime: 55 min

Episode 7 9.0

Air date: 1972-09-11

Runtime: 55 min

Episode 8 9.0

Air date: 1973-09-01

Runtime: 55 min

Episode 9 9.0

Air date: 1974-01-06

Runtime: 55 min

Episode 10 9.0

Air date: 1975-08-26

Runtime: 55 min

Episode 11 9.0

Air date: 1977-06-04

Runtime: 55 min

Episode 12 9.0

Air date: 1978-05-20

Runtime: 55 min

Episode 13 9.0

Air date: 1978-11-11

Runtime: 55 min

Episode 14 9.0

Air date: 1979-10-19

Runtime: 55 min

Episode 15 9.0

Air date: 1980-11-09

Runtime: 55 min

Episode 16 9.0

Air date: 1981-11-14

Runtime: 55 min

Episode 17 9.0

Air date: 1984-11-09

Runtime: 55 min

Episode 18 9.0

Air date: 1985-03-23

Runtime: 55 min

Episode 19 9.0

Air date: 1985-12-27

Runtime: 55 min

Episode 20 9.0

Air date: 1987-04-11

Runtime: 55 min

Episode 21 9.0

Air date: 1988-05-21

Runtime: 55 min

Episode 22 9.0

Air date: 1989-09-04

Runtime: 55 min

Episode 23 8.0