S7·E13 Three Billboards

Episode recap

Task: Write a 280-380 word episode recap for The Rookie S7E13 (Three Billboards).
Constraints:
Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
No invented titles, names, dates, episode counts, awards, ratings, box-office, viewership, or plot points.
Omit details not in the material.
Style: Original, neutral, encyclopedic prose, plain text.
No markdown, no asterisks, no headings, no bullet points.
Word count target: 280-380 words.
Synopsis: "When anti-LAPD billboards emerge throughout the city, the team searches for who's responsible. Meanwhile, a car bombing prompts an investigation, Miles reconnects with an old friend, and John and Bailey assess their ability to adopt."
Sources:
[1] General info: The Rookie (2018), TV-14, Crime, Drama, Comedy.
[3] General info: John Nolan is a small-town guy pursuing his dream of being an LAPD officer; he is the force's oldest rookie.
[4] General info: Created by Alexi Hawley. Cast includes Nathan Fillion, Alyssa Diaz, Richard T. Jones, Melissa O'Neil.
Episode Title: Three Billboards.
Episode Number: Season 7, Episode 13.
Plot Point 1: Anti-LAPD billboards appear in the city; the team investigates the person responsible.
Plot Point 2: A car bombing occurs, leading to an investigation.
Plot Point 3: Miles reconnects with an old friend.
Plot Point 4: John and Bailey assess their ability to adopt.
The synopsis is very short. The word count requirement is 280-380 words.
Problem: If I only use the provided facts, I will run out of content long before 280 words.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing." vs "Write a grounded 280-380 word episode recap".
Conflict Resolution: I must follow the instruction to "Write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES." If the synopsis is sparse, I cannot reach 280 words without inventing facts, which is strictly forbidden. However, I can expand on the context provided in the sources (the series overview) to add length while remaining factual.
Contextual facts:
Series: The Rookie (2018).
Genre: Crime, drama, and comedy.
Creator: Alexi Hawley.
Main character: John Nolan,