1987 | 41 Episodes

Season 0 of Unsolved Mysteries premiered on January 20, 1987.

1988 | 38 Episodes

Season 1 of Unsolved Mysteries premiered on October 5, 1988.

1989 | 52 Episodes

Season 2 of Unsolved Mysteries premiered on September 20, 1989.

1990 | 56 Episodes

Season 3 of Unsolved Mysteries premiered on September 19, 1990.

1991 | 54 Episodes

Season 4 of Unsolved Mysteries premiered on September 18, 1991.

1992 | 55 Episodes

Season 5 of Unsolved Mysteries premiered on September 16, 1992.

1993 | 52 Episodes

Season 6 of Unsolved Mysteries premiered on September 22, 1993.

1994 | 40 Episodes

Season 7 of Unsolved Mysteries premiered on September 25, 1994.

1995 | 41 Episodes

Season 8 of Unsolved Mysteries premiered on October 20, 1995.

1996 | 43 Episodes

Season 9 of Unsolved Mysteries premiered on September 20, 1996.

1997 | 11 Episodes

Season 10 of Unsolved Mysteries premiered on November 13, 1997.

1999 | 13 Episodes

Season 11 of Unsolved Mysteries premiered on April 2, 1999.

2001 | 55 Episodes

Season 12 of Unsolved Mysteries premiered on July 2, 2001.

2002 | 51 Episodes

Season 13 of Unsolved Mysteries premiered on June 10, 2002.

2008 | 175 Episodes

Season 14 of Unsolved Mysteries premiered on October 13, 2008.