S04E09Person of Interest season 4 episode 9: The Devil You Know
Aired 25 November 201443 minRated M
Where to watch Person of Interest Season 4 in Australia
Person of Interest season 4 is streaming in Australia on Netflix (subscription). You can also buy it on Apple TV from $29.99 and Prime Video Store from $29.99.
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Availability checked 16 November 2026.
What happens in “The Devil You Know”
Reese must save Elias from the Brotherhood. He can't get any help from Root or Shaw since Shaw's cover is blown and Root is escorting her to underground.
Episode summary: TMDB.
Before you watch
- It is episode 9 of 22 of season 4, so watch episodes 1 to 8 first.
- It runs about 43 minutes.
- Directed by Richard J. Lewis, written by Erik Mountain.
- TMDB users rate it 8.7 out of 10 (38 votes).
Person of Interest trailer
The official trailer for the series (no preview of this episode has been published).
Play video: Person of Interest trailer
Cast and crew of this episode
- Director
- Richard J. Lewis
- Writer
- Erik Mountain
- Guest stars
- Enrico Colantoni as Carl EliasJohn Nolan as John GreerDavid Valcin as ScarfaceJamie Hector as Link CordellCara Buono as Martine RousseauWinston Duke as DominicJames Le Gros as Bruce MoranSalvatore Inzerillo as Gino
Credits: TMDB.
More from Person of Interest Season 4
Previous · S04E08Point of Origin18 November 2014Every episode of Season 4Person of Interest 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.