Season 1 of 警視庁・樋口警部補 premiered on August 20, 2003.

Season 2 of 警視庁・樋口警部補 premiered on September 12, 2004.

Season 3 of 警視庁・樋口警部補 premiered on February 25, 2015.

Season 4 of 警視庁・樋口警部補 premiered on August 26, 2015.

Season 5 of 警視庁・樋口警部補 premiered on December 21, 2016.

Season 6 of 警視庁・樋口警部補 premiered on December 24, 2018.

Season 7 of 警視庁・樋口警部補 premiered on September 2, 2019.

Season 8 of 警視庁・樋口警部補 premiered on October 19, 2020.

Season 9 of 警視庁・樋口警部補 premiered on December 14, 2020.

Season 10 of 警視庁・樋口警部補 premiered on October 11, 2021.

Season 11 of 警視庁・樋口警部補 premiered on February 7, 2022.

Season 12 of 警視庁・樋口警部補 premiered on April 4, 2022.