Season 1 of Lenßen & Partner premiered on March 10, 2003.

Season 2 of Lenßen & Partner premiered on September 1, 2003.

Season 3 of Lenßen & Partner premiered on February 3, 2004.

Season 4 of Lenßen & Partner premiered on January 26, 2005.

Season 5 of Lenßen & Partner premiered on January 9, 2006.

Season 6 of Lenßen & Partner premiered on January 15, 2007.

Season 7 of Lenßen & Partner premiered on January 14, 2008.

Season 8 of Lenßen & Partner premiered on January 26, 2009.