S10·E14 The Executioner's Song

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S10E14 (The Executioner's Song).
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: No inventing/guessing titles, names, dates, counts, awards, ratings, numbers, 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: Word count target: 280-380 words.
Synopsis: Dean, Sam and Castiel deal with Cain’s return. Crowley and Rowena continue to grow closer but when Crowley bails on plans with his mother to help the Winchesters, Rowena lets him have it.
Sources:
[1] Series title: Supernatural (2005).
[3] Creator: Eric Kripke. Cast: Jared Padalecki, Jensen Ackles, Jim Beaver, Misha Collins.
[4] Series info: American dark fantasy television series. Created by Eric Kripke. Broadcast on The WB and later The CW for 15 seasons (Sept 13, 2005, to Nov 19, 2020). Follows Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles).
[5] Plot premise: Sam and Dean Winchester lost their mother to a mysterious and demonic supernatural force. Their father raised them to be soldiers to kill paranormal evil.
Episode: S10E14 (The Executioner's Song).
Characters: Dean, Sam, Castiel, Cain, Crowley, Rowena.
Plot points:
Dean, Sam, and Castiel deal with Cain's return.
Crowley and Rowena are growing closer.
Crowley bails on plans with Rowena to help the Winchesters.
Rowena reacts to Crowley bailing on her.
The synopsis is extremely brief.
The word count requirement is 280-380 words.
Problem: There is almost no information in the provided text to reach 280 words without violating the "never invent or guess" rule.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing."
Conflict: The user asks for 280-380 words, but the provided text only contains about 40 words of actual plot content.
Strategy: I must expand on the context provided