S10E23Supernatural season 10 episode 23: Brother's Keeper
Aired 20 May 201543 minRated TV-14
Where to watch Supernatural Season 10 in Australia
Supernatural season 10 is streaming in Australia on Prime Video (subscription), HBO Max (subscription) and Stan (subscription). You can also buy it on Apple TV from $29.99.
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Buy from $29.99 a season
Availability checked 16 November 2026.
What happens in “Brother's Keeper”
Dean makes a shocking decision regarding the Mark of Cain that would change not only his life, but Sam’s too. Meanwhile, Crowley and Rowena face off and Castiel gets caught in the middle.
Episode summary: TMDB.
Before you watch
- It is the season finale of season 10, so watch episodes 1 to 22 first.
- It runs about 43 minutes.
- Directed by Philip Sgriccia, written by Jeremy Carver.
- TMDB users rate it 8.3 out of 10 (34 votes).
Supernatural trailer
The official trailer for the series (no preview of this episode has been published).
Play video: Supernatural trailer
Cast and crew of this episode
- Director
- Philip Sgriccia
- Writer
- Jeremy Carver
- Guest stars
- Julian Richings as DeathRobert Moloney as RudyRoger Haskett as Mr. McKinleyFiona Hogan as Mrs. McKinleyEmilija Baranac as Crystal ThorrsonDarren Mann as J.J. McKinleyJeffrey C.R. Wallace as ReggieNathan Dales as Seth / Oskar
Credits: TMDB.
More from Supernatural Season 10
Every episode of Season 10Supernatural episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.