Vigil: Series 1

Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "Vigil" Season 1.
Constraints:
Use ONLY provided synopsis and sources.
No invented titles, names, dates, counts, awards, ratings, box-office, viewership, or plot points.
Omit details not in the material.
Style: Original, neutral, encyclopedic prose in plain text.
Format: JSON only (no markdown, no asterisks, no headings, no bullet points).
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Source [1]: "The mysterious disappearance of a Scottish fishing trawler and a death on-board the sub".
Source [2]: British police procedural drama created by Tom Edge, produced by World Productions. Premiered on BBC One on 29 August 2021.
Source [3]: Created by Tom Edge. Cast: Suranne Jones, Rose Leslie, Gary Lewis, Orla Russell. Plot: Mysterious disappearance of a Scottish fishing trawler and a death onboard a Trident nuclear submarine bring the police into conflict with the Navy and British security services.
Source [4]: Plot: Mysterious disappearance of a Scottish fishing trawler and a death on-board the submarine HMS Vigil bring the police into conflict with the Navy and British security services. DCI Amy Silva and DS Kirsten Longacre lead an investigation on land and at sea into a conspiracy that goes to the very heart of Britain’s na [text cuts off].
Source [5]: Rose Leslie is in the drama series Vigil (2021).
Overview (160-220 words):
Vigil is a British police procedural drama series created by Tom Edge and produced by World Productions. The series premiered on BBC One on 29 August 2021. The narrative follows an investigation triggered by the mysterious disappearance of a Scottish fishing trawler and a death on-board the Trident nuclear submarine HMS Vigil. This investigation is led by DCI Amy Silva and DS Kirsten Longacre, who conduct their work both on land and at sea. As the investigation unfolds, the police find themselves in conflict with the Navy and British security services. The central plot involves uncovering a conspiracy that reaches into the heart of Britain's national interests. The series features a cast including Suranne Jones, Rose Leslie, Gary Lewis, and Orla Russell. The drama explores the complexities of the investigation as the characters navigate the tensions between law enforcement and military or security organizations. (Current word count: ~145 words. Need to expand to 160-