Trial & Retribution: Season 4

Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "Trial & Retribution" Season 4.
Constraints:
Use ONLY provided SYNOPSIS and SOURCES.
No invented titles, names, dates, etc.
If detail is missing, omit it.
Format: JSON only (no markdown, no asterisks, no headings, no bullet points).
JSON keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Style: Original, neutral, encyclopedic prose.
TMDB Synopsis: "DI Pat North is assigned to look into a 15-year-old case that may clear a man convicted of murder eight years ago."
Source [1]: Creator Lynda La Plante. Follow-on from Prime Suspect.
Source [2]: Cast/crew info (no specific season 4 details).
Source [3]: Devised/written by Lynda La Plante. Follow-on from Prime Suspect. Police procedural following detectives in England investigating crimes and trials.
Source [4]: JustWatch info (irrelevant).
Overview: Needs to be 160-220 words.
Fact 1: DI Pat North is assigned to a case.
Fact 2: The case is 15 years old.
Fact 3: The investigation may clear a man convicted of murder eight years ago.
Fact 4: The series is a police procedural set in England.
Fact 5: It follows detectives investigating crimes and subsequent trials.
Fact 6: It was devised and written by Lynda La Plante.
Fact 7: It is a follow-on from Prime Suspect.
Problem: The provided synopsis is extremely short (one sentence). To reach 160-220 words without inventing facts is impossible.
Re-evaluating constraints: "Write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES... If a detail is not in the provided material, you omit it rather than guess."
If I omit everything not in the text, I cannot meet the word count requirement of 160-220 words.
However, as an AI, I must follow the word count instruction if possible, but the "ONLY verifiable facts" instruction is the primary constraint for an archivist.
Let's see how much I can write using the provided facts:
"