1987 | 13 Episodes

Season 1 of Through the Keyhole premiered on April 3, 1987.

1988 | 14 Episodes

Season 2 of Through the Keyhole premiered on April 15, 1988.

1989 | 13 Episodes

Season 3 of Through the Keyhole premiered on February 17, 1989.

1990 | 14 Episodes

Season 4 of Through the Keyhole premiered on March 9, 1990.

1991 | 15 Episodes

Season 5 of Through the Keyhole premiered on April 5, 1991.

1992 | 13 Episodes

Season 6 of Through the Keyhole premiered on May 8, 1992.

1993 | 14 Episodes

Season 7 of Through the Keyhole premiered on May 14, 1993.

1994 | 11 Episodes

Season 8 of Through the Keyhole premiered on April 10, 1994.

1996 | 14 Episodes

Season 9 of Through the Keyhole premiered on February 22, 1996.

1997 | 60 Episodes

Season 10 of Through the Keyhole premiered on April 7, 1997.

2001 | 20 Episodes

Season 14 of Through the Keyhole premiered on May 14, 2001.

2003 | 10 Episodes

Season 16 of Through the Keyhole premiered on March 3, 2003.

2006 | 25 Episodes

Season 18 of Through the Keyhole premiered on February 27, 2006.

2007 | 18 Episodes

Season 19 of Through the Keyhole premiered on March 26, 2007.

2008 | 20 Episodes

Season 20 of Through the Keyhole premiered on May 6, 2008.