Season 1 of Derrick premiered on October 20, 1974.

Season 2 of Derrick premiered on January 12, 1975.

Season 3 of Derrick premiered on January 11, 1976.

Season 4 of Derrick premiered on January 23, 1977.

Season 5 of Derrick premiered on January 6, 1978.

Season 6 of Derrick premiered on January 5, 1979.

Season 7 of Derrick premiered on January 4, 1980.

Season 8 of Derrick premiered on January 2, 1981.

Season 9 of Derrick premiered on January 22, 1982.

Season 10 of Derrick premiered on February 4, 1983.

Season 11 of Derrick premiered on January 20, 1984.

Season 12 of Derrick premiered on January 18, 1985.

Season 13 of Derrick premiered on January 3, 1986.

Season 14 of Derrick premiered on January 2, 1987.

Season 15 of Derrick premiered on January 8, 1988.

Season 16 of Derrick premiered on January 6, 1989.

Season 17 of Derrick premiered on January 5, 1990.

Season 18 of Derrick premiered on January 4, 1991.

Season 19 of Derrick premiered on January 17, 1992.

Season 20 of Derrick premiered on January 22, 1993.

Season 21 of Derrick premiered on January 7, 1994.

Season 22 of Derrick premiered on January 6, 1995.

Season 23 of Derrick premiered on January 5, 1996.

Season 24 of Derrick premiered on January 3, 1997.

Season 25 of Derrick premiered on January 23, 1998.