Trial & Retribution: Season 6

Season overview

Role: Meticulous television and film archivist.
Task: Create a JSON object for "Trial & Retribution" Season 6.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown/asterisks/headings/bullets in the prose (though the primer is an array of strings). Output valid JSON only.
Target content: Season 6.
TMDB Season Synopsis: "Back on the murder squad, North is asked to investigate when a young mother of two is abducted. The confession of a local sex offender complicates matters, as Pat looks into the possibility that the father of a young protégé of the woman may be responsible for her disappearance."
Source [1]: Series created by Lynda La Plante, follow-on from Prime Suspect.
Source [2]: Cast/crew info (no specific plot for S6).
Source [3]: Feature-length ITV police procedural, first aired 19 Oct 1997, written by Lynda La Plante, follow-on from Prime Suspect, episodes typically broadcast over two nights.
Source [4]: Police procedural following detectives in England investigating crimes and trials.
Source [5]: Nothing useful.
Overview:
North returns to the murder squad to investigate the abduction of a young mother of two. The investigation becomes complicated by the confession of a local sex offender. Meanwhile, Pat investigates the possibility that the father of a young protégé belonging to the abducted woman may be responsible for her disappearance. This series, devised and written by Lynda La Plante, is a police procedural set in England that follows detectives as they investigate crimes and the subsequent trials. As a follow-on to the television series Prime Suspect, the show focuses on the complexities of criminal investigations and the legal proceedings that follow. In this season, the detectives must navigate conflicting information and potential suspects to resolve the disappearance of the mother. (Word count check: ~135 words. I need to expand to 160-220 words using only the provided info).
Expanding Overview (Strictly using provided info):
The series Trial & Retribution is a police procedural set in England that follows detectives as they investigate various crimes and the trials that result from those investigations. Devised and written by Lynda La Plante, the show serves as a follow-on to her successful television series Prime Suspect. In this season, North is back on the murder squad and is tasked with investigating the abduction of a young mother of two. The investigation faces complications following the confession of a local sex offender. As the case progresses, Pat