S02E21Person of Interest season 2 episode 21: Zero Day
Aired 2 May 201343 minRated M
Where to watch Person of Interest Season 2 in Australia
Person of Interest season 2 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 “Zero Day”
When a virus causes the machine to malfunction, numbers are issued irregularly; the team searches for an extremely elusive tech millionaire.
Episode summary: TMDB.
Before you watch
- It is episode 21 of 22 of season 2, so watch episodes 1 to 20 first.
- It runs about 43 minutes.
- Directed by Jeffrey G. Hunt, written by David Slack and Amanda Segel.
- TMDB users rate it 8.8 out of 10 (42 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
- Jeffrey G. Hunt
- Writers
- David SlackAmanda Segel
- Guest stars
- Amy Acker as RootSarah Shahi as Sameen ShawAl Sapienza as Raymond TerneyBrett Cullen as Nathan IngramCarrie Preston as Grace HendricksJohn Nolan as John GreerJay O. Sanders as Special CounselKevyn Morrow as Ed Solis
Credits: TMDB.
More from Person of Interest Season 2
Every episode of Season 2Person 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.