Mindhunter is an American psychological crime thriller television series created by Joe Penhall, based on the 1995 true-crime book Mindhunter: Inside the FBI's Elite Serial Crime Unit by John E. Douglas and Mark Olshaker. The series debuted in 2017 and ran for two seasons. Executive producers included Penhall, Charlize Theron, and David Fincher, the latter of whom served as the series' most frequent director and de facto showrunner, overseeing many of the scriptwriting and production processes. The series stars Jonathan Groff, Holt McCallany, and Anna Torv, and follows the founding of the Behavioral Science Unit in the Federal Bureau of Investigation (FBI) in the late 1970s and the beginning of criminal profiling.The first season of 10 episodes debuted worldwide on Netflix on October 13, 2017. The second season was released by Netflix on August 16, 2019. In January 2020, Netflix announced that the potential for a third season was on indefinite hold as Fincher wanted to pursue other projects, but may "revisit [the series] in the future". In February 2023, Fincher confirmed that the series was officially over.