S13E20Supernatural season 13 episode 20: Unfinished Business
Aired 26 April 201842 minRated TV-14
Where to watch Supernatural Season 13 in Australia
Supernatural season 13 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 and Fetch TV from $44.99.
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$12.99/mth (Amazon Prime Monthly plan) · Added 18 September 2026
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From $11.99/mth
Watch now on StanStan
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From $9.99/mth
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Stream now on Apple TVApple TV
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Buy from $29.99 a season
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Buy from $44.99 a season
Availability checked 16 November 2026.
What happens in “Unfinished Business”
Gabriel is back and drags Sam and Dean into his plot for revenge on the demigods who sold him to Asmodeus. Meanwhile, Jack's inflating confidence leads to reckless decisions that could put others in harm's way.
Episode summary: TMDB.
Before you watch
- It is episode 20 of 23 of season 13, so watch episodes 1 to 19 first.
- It runs about 42 minutes.
- Directed by Richard Speight Jr..
- TMDB users rate it 7.7 out of 10 (27 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
- Richard Speight Jr.
- Guest stars
- Fletcher Donovan as SleipnirSandy Robson as Fenrir OdinsbaneTarun Keram as JakobMichael Adamthwaite as NarfiRuth Connell as Rowena MacLeodAlexander Calvert as JackSamantha Smith as Mary WinchesterRichard Speight Jr. as Gabriel
Credits: TMDB.
More from Supernatural Season 13
Every episode of Season 13Supernatural 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.