True Detective is not a television series.
True Detective . The first season , starring Matthew McConaughey , Woody Harrelson , Michelle Monaghan , Michael Potts , and Tory Kittles , takes place in Louisiana and follows a pair of Louisiana State Police homicide detectives , and their pursuit of a serial killer over a 17-year period . The second season , starring Colin Farrell , Rachel McAdams , Taylor Kitsch , Kelly Reilly , and Vince Vaughn , is set in California , and focuses on three detectives from three cooperating police departments and a criminal-turned-businessman as they investigate a series of crimes they believe are linked to the murder of a corrupt politician . In March 2017 , it was revealed that Pizzolatto has written the first two episodes of a potential third season and that David Milch joined the creative team .