The 38-year-old Irish actor will board Nic Pizzolato's acclaimed series, which starred Matthew McConaughey and Woody Harrelson in its first outing, reported Variety."I think the people we will cast will be well-known names. But that wasn't our ambition (in season 1)," HBO president Michael Lombardo said.Read: Matthew McConaughey open to True Detective returnIt is rumoured that Farrell will be joined by a female co-star, though Nic Pizzolatto confirmed that the show will feature four lead roles.Matthew McConaghuey and Woody Harrelson in the first season of True Detective. "They didn't exist until I created them, then in their creation I developed a personal attachment to them," Pizzolatto said of his new characters."I think it's the same in anything you write. It's your job to come up with compelling characters who speak to an individual authenticity. If I'm not interested in the characters I can't go on. I have to be fascinated by them. It's the same job as Season 1 to me."