S8·E17 Goodbye, Stranger

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S8E17 (Goodbye, Stranger).
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: Do not invent/guess titles, names, dates, counts, awards, ratings, box-office, viewership, or plot points.
Constraint 3: If a detail is not in the material, omit it.
Constraint 4: Write original, neutral, encyclopedic prose in plain text.
Constraint 5: No markdown, no asterisks, no headings, no bullet points.
Constraint 6: Length must be 280-380 words.
Synopsis: Castiel reappears in Sam and Dean’s life. He tells them Crowley has unleashed several demons into a small town to find Lucifer’s Crypt, which holds valuable relicts. While interrogating a demon, the three discover Crowley has been torturing Meg, who knows the location of the crypt.
Sources:
[1] TMDB: Series overview (Saving people, hunting things...).
[2] Wikipedia: Created by Eric Kripke. Aired on The WB and The CW. 15 seasons. Sam (Jared Padalecki) and Dean (Jensen Ackles) hunt demons.
[3] TMDB Cast/Crew: Sam and Dean lost their mother to a demonic force. Father raised them to be soldiers to kill paranormal evil.
[4] Simple English Wikipedia: Horror, drama, fantasy, fiction series. Created by Eric Kripke.
[5] Moviefone: Similar to [3].
Castiel reappears to Sam and Dean Winchester.
Crowley has unleashed several demons into a small town.
The purpose is to find Lucifer’s Crypt.
The crypt holds valuable relicts.
Sam, Dean, and Castiel interrogate a demon.
They discover Crowley is torturing Meg.
Meg knows the location of the crypt.
Problem: The synopsis is very short. The word count requirement is 280-380 words.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing." vs "Write a grounded 280-380 word episode recap".
Conflict Resolution: Usually, in these prompts, if the source material is insufficient to meet the word count without violating the "no guessing/no inventing" rule, I must prioritize the "no inventing" rule. However, I can expand on the context provided in the sources (the series background) to build the prose, but I cannot invent plot points for the specific episode.
Wait: The prompt says "Write a grounded 2