The second season of True Detective, an American anthology crime drama television series created by Nic Pizzolatto, began airing on June 21, 2015, on the premium cable network HBO. With a principal cast of Colin Farrell, Rachel McAdams, Taylor Kitsch, Kelly Reilly, and Vince Vaughn, the season comprises eight episodes and concluded its initial airing on August 9, 2015.

True Detective is an American anthology crime drama television series created by Nic Pizzolatto. The series, broadcast by the premium cable network HBO in the United States, premiered on January 12, 2014. Each season of the series is structured as a self-contained narrative, employing new cast ensembles, and following various sets of characters and settings.