Garland Periwinkle

Garland Periwinkle turns up in Mindhunter's world of interview rooms and case files, a figure on the edges of the Bureau's early efforts to understand violent crime. Brent Sexton plays him with the wary, practical air of a working investigator, someone more interested in getting a case closed than in theory.

Sexton has a gift for men who carry authority without swagger, and here that plays as quiet skepticism toward the show's newer methods. He resists easy readability, giving the character weight through restraint rather than dialogue, which fits Mindhunter's larger interest in procedure over spectacle.