Holden Ford is based on John E. DouglasThe character of Holden Ford, the young and ambitious special agent in the FBI’s Behavioral Science Unit (BSU) played by Jonathan Groff, is based on the real-life Douglas who wrote the book on which the series is based.Prior to that, he was a sniper for the local FBI SWAT team, then a hostage negotiator.From 1976-1979, he helped organize interviews with a total of 36 serial killers who were serving time in jail and helped set up Vi-CAP (Violent Criminal Apprehension Program), a centralized computer database of information on unsolved murders.Now 82, she continues to work as a professor at the William F. Connell School of Nursing at Boston College.The prison interviews were taken from real interviews