Investigation Held by ZnaToKi: Season 1 - 23 Episode s
1x1 - Episode 1
February 14, 1971
1x2 - Episode 2
April 18, 1971
1x3 - Episode 3
November 9, 1971
1x4 - Episode 4
February 8, 1972
1x5 - Episode 5
May 20, 1972
1x6 - Episode 6
September 16, 1972
1x7 - Episode 7
September 11, 1972
1x8 - Episode 8
September 1, 1973
1x9 - Episode 9
January 6, 1974
1x10 - Episode 10
August 26, 1975
1x11 - Episode 11
June 4, 1977
1x12 - Episode 12
May 20, 1978
1x13 - Episode 13
November 11, 1978
1x14 - Episode 14
October 19, 1979
1x15 - Episode 15
November 9, 1980
1x16 - Episode 16
November 14, 1981
1x17 - Episode 17
November 9, 1984
1x18 - Episode 18
March 23, 1985
1x19 - Episode 19
December 27, 1985
1x20 - Episode 20
April 11, 1987
1x21 - Episode 21
May 21, 1988
1x22 - Episode 22
September 4, 1989
1x23 - Episode 23