S9·E17 Mother's Little Helper

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S9E17 (Mother's Little Helper).
Constraints:
Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
No inventing/guessing titles, names, dates, counts, awards, ratings, box-office, viewership, or plot points.
If a detail is not in the material, omit it.
Style: Original, neutral, encyclopedic prose, plain text.
No markdown, no asterisks, no headings, no bullet points.
Word count target: 280-380 words.
Synopsis: Dean chooses to stay in the bunker to try and locate Abaddon. Sam goes to a small Illinois town to investigate a string of vicious murders committed by seemingly harmless individuals.
Sources:
Series title: Supernatural.
Characters: Sam Winchester (played by Jared Padalecki), Dean Winchester (played by Jensen Ackles).
Premise: Brothers hunt demons, monsters, and other supernatural beings.
Background: Lost mother to a mysterious and demonic supernatural force; father raised them to be soldiers.
Creator: Eric Kripke.
Network: The WB, then The CW.
Run dates: September 13, 2005, to November 19, 2020.
Episode Specifics:
Dean stays in the bunker to locate Abaddon.
Sam goes to a small Illinois town.
Sam investigates vicious murders by seemingly harmless individuals.
Wait, the word count requirement is 280-380 words.
The provided synopsis is extremely short (approx 40 words).
The sources provide general series info but nothing else about the specific episode.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing." AND "Write a grounded 280-380 word episode recap."
Conflict: The prompt asks for 280-380 words, but the provided information only supports about 40-50 words of factual content regarding the episode itself. If I follow the "ONLY verifiable facts" and "If a detail is not in the provided material, you omit it" rules, I cannot reach 280 words without inventing facts.
Strategy: I must prioritize the "ONLY verifiable facts" and "never invent" rules over the word count if the word count forces invention. However, I can expand on the series context provided in the sources to build a professional, encyclopedic entry that includes the episode details.
Drafting Content:
Identify the series: Supernatural, created by Eric