Season 1 of In Search of... premiered on Apr 17, 1977
Leonard Nimoy hosts investigations into various mysteries.
Season 2 of In Search of... premiered on Dec 24, 1977
Leonard Nimoy hosts investigations into various mysteries.
Season 3 of In Search of... premiered on Sep 14, 1978
Leonard Nimoy hosts investigations into various mysteries.
Season 4 of In Search of... premiered on Sep 20, 1979
Leonard Nimoy hosts investigations into various mysteries.
Season 5 of In Search of... premiered on Sep 20, 1980
Leonard Nimoy hosts investigations into various mysteries.
Season 6 of In Search of... premiered on Sep 21, 1981
Leonard Nimoy hosts investigations into various mysteries.
Season 7 of In Search of... premiered on Oct 04, 2002
Leonard Nimoy hosts investigations into various mysteries.