1972 | 1 Episodes

Season 0 of Whodunnit? premiered on August 15, 1972.

1973 | 6 Episodes

Season 1 of Whodunnit? premiered on June 25, 1973.

1974 | 6 Episodes

Season 2 of Whodunnit? premiered on June 24, 1974.

1974 | 11 Episodes

Season 3 of Whodunnit? premiered on December 26, 1974.

1976 | 7 Episodes

Season 4 of Whodunnit? premiered on June 28, 1976.

1977 | 5 Episodes

Season 5 of Whodunnit? premiered on June 27, 1977.

1978 | 12 Episodes

Season 6 of Whodunnit? premiered on April 3, 1978.