Mindhunter_1x09 -

: Holden’s unorthodox methods during the Speck interview lead to an internal probe by the FBI's Office of Professional Responsibility. This creates significant dissension among the team, particularly with Wendy Carr, who emphasizes the need for scientific rigor and professional standards.

: David Fincher (Executive Producer and frequent director). Mindhunter_1x09

: Agents Holden Ford and Bill Tench interview mass murderer Richard Speck. In an attempt to build rapport and elicit a confession, Holden uses aggressive, vulgar language that shocks his colleagues and triggers a internal investigation. : Holden’s unorthodox methods during the Speck interview

: Jonathan Groff (Holden Ford), Holt McCallany (Bill Tench), Anna Torv (Wendy Carr). Mindhunter (TV Series 2017–2019) - IMDb : Agents Holden Ford and Bill Tench interview

: By engaging with Speck in his own "language," Holden risks losing his own professional identity, a recurring theme throughout the series.