[PAR] [TLE] Mindhunter (TV series) [SEP] Mindhunter is an American drama web television series slated to debut on October 13, 2017, on Netflix.  It is based on the book "Mind Hunter: Inside The FBI’s Elite Serial Crime Unit" written by Mark Olshaker and John E. Douglas.  It has already been renewed for a second season. [PAR] [TLE] John E. Douglas [SEP] John Edward Douglas (born 1945) is a former special agent and unit chief in the United States Federal Bureau of Investigation (FBI).  He was one of the first criminal profilers and has written books on criminal psychology.
[PAR] [TLE] Mindhunter ( TV series ) [ SEP ] Mindhunter is an American drama web television series slated to debut on October 13 , 2017 , on Netflix . It is based on the book " Mind Hunter : Inside The FBI ’s Elite Serial Crime Unit " written by Mark Olshaker and John E. Douglas . It has already been renewed for a second season . [PAR] [TLE] John E. Douglas [ SEP ] John Edward Douglas ( born 1945 ) is a former special agent and unit chief in the United States Federal Bureau of Investigation ( FBI ) . He was one of the first criminal profilers and has written books on criminal psychology .
Mindhunter is an American drama web television series written in part by a former special agent who has written books on what?
Mindhunter is an American drama web television series written in part by a former special agent who has written books on what ?
criminal psychology
criminal psychology