MINDHUNTER: Season 2

Season overview

Topic: MINDHUNTER Season 2.
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points (in the overview, though the primer asks for an array of 4 concise bullet points, which in JSON is an array of strings).
Output Format: Valid JSON only.
Keys:
overview: 160-220 word summary of the season's narrative arc.
primer: Array of exactly 4 concise bullet points (strings) summarizing essential previous lore, character positions, and stakes.
[1] TMDB Synopsis: "The Behavioral Science Unit's killer instincts move from theory into action when the FBI joins in a high-profile hunt for a serial child murderer."
[2] Wikipedia: Created by Joe Penhall, based on the 1995 book Mindhunter: Inside the FBI's Elite Serial Crime Unit by John E. Douglas and Mark Olshaker. Debuted 2017, ran for two seasons.
[3] Simkl: Late 1970s. Two FBI agents expand criminal science by delving into the psychology of murder and getting uneasily close to all-too-real monsters.
[4] The Guardian: Profiling techniques are useful but take an emotional toll on the FBI man.
[5] Variety: Mentions "Mindhunter" in a list of works, but doesn't provide specific plot details for season 2 other than general context.
Season 2 specific plot info: "The Behavioral Science Unit's killer instincts move from theory into action when the FBI joins in a high-profile hunt for a serial child murderer."
Drafting Overview:
The second season of the American psychological crime thriller series Mindhunter follows the evolution of the FBI's Behavioral Science Unit. During the late 1970s, the unit transitions from developing theoretical profiling techniques to applying these instincts in active investigations. This shift occurs as the FBI participates in a high-profile hunt for a serial child murderer. The series, created by Joe Penhall and based on the 1995 true-crime book Mindhunter: Inside the FBI's Elite Serial Crime Unit by John E. Douglas and Mark Olshaker, explores the expansion of criminal science through the study of the psychology of murder. As two FBI agents delve into the minds of killers, they get uneasily close to real-life monsters. While the profiling methods developed by the unit prove highly useful for their investigative work, the process takes an increasingly emotional toll on the FBI agent involved. This season marks a move from the conceptual foundations of criminal profiling