Season 0 of Secret History premiered on July 25, 2000.

Season 1 of Secret History premiered on November 14, 1991.

Season 2 of Secret History premiered on June 29, 1992.

Season 3 of Secret History premiered on January 20, 1994.

Season 4 of Secret History premiered on August 31, 1995.

Historical events are extensively re-explored both through written records and systematic examinations in the field.

Season 5 of Secret History premiered on June 16, 1997.

Season 6 of Secret History premiered on May 11, 1998.

Season 7 of Secret History premiered on August 10, 1999.

Season 8 of Secret History premiered on August 10, 2000.

Season 9 of Secret History premiered on July 22, 2001.

Season 10 of Secret History premiered on June 6, 2002.

Season 11 of Secret History premiered on May 15, 2003.

Season 12 of Secret History premiered on June 7, 2004.

Season 13 of Secret History premiered on November 10, 2013.

Season 14 of Secret History premiered on September 14, 2014.

Season 15 of Secret History premiered on July 19, 2015.

Season 16 of Secret History premiered on April 19, 2016.

Season 17 of Secret History premiered on January 1, 2017.