Person of Interest Zero Day (Season 2, Episode 21)
TV-14
TV Episode | 44 min | Action, Crime, Drama

Person of Interest

Zero Day (Season 2, Episode 21)

TV-14

TV Episode | 44 min | Action, Crime, Drama

They wait ten days for a new number due to a system virus, suspecting Root is the problem. It's for Ernest Thornhill, who isn't who, or what, he is supposed to be. At stake is The Machine - will it remain with Finch or end up with Decima?

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Cast	+ Add Cast
19 cast members

Name	Known for
Jim Caviezel John Reese John Reese See fewer	The Passion of the Christ (2004)
Taraji P. Henson Detective Jocelyn 'Joss' Carter Detective Jocelyn 'Joss' Carter See fewer	The Curious Case of Benjamin Button (2008)
Kevin Chapman Detective Lionel Fusco (credit only) Detective Lionel Fusco (credit only) See fewer	CODA (2021)
Michael Emerson Harold Finch Harold Finch See fewer	Saw (2004)
Amy Acker Root Root See fewer	Angel (1999)
Brett Cullen Nathan Ingram Nathan Ingram See fewer	Ghost Rider (2007)
Jay O. Sanders Special Counsel Special Counsel See fewer	The Day After Tomorrow (2004)
Carrie Preston Grace Hendricks Grace Hendricks See fewer	Claws (2017)
John Nolan John Greer John Greer See fewer	Batman Begins (2005)
Al Sapienza Detective Raymond Terney Detective Raymond Terney See fewer	The Sopranos (1999)
Kevyn Morrow IAB Detective Ed Solis IAB Detective Ed Solis See fewer	9-1-1 (2018)
Opal Alladin Claudia Sugarman Claudia Sugarman See fewer	United 93 (2006)
Sarah Shahi Sameen Shaw Sameen Shaw See fewer	Black Adam (2022)
Carter Gill Office Drone Office Drone See fewer	Harlan Coben's Shelter (2023)
Mike Masters ESU Captain ESU Captain See fewer	Blindspot (2015)
Sydney James Harcourt NYPD Uniform NYPD Uniform See fewer	FBI (2018)
Zoli Dora Big Russian (uncredited) Big Russian (uncredited) See fewer	Escape Plan 2: Hades (2018)
Adrian Matilla Benedict (uncredited) Benedict (uncredited) See fewer	Daredevil (2015)
Jon Douglas Rainey Detective (uncredited) Detective (uncredited) See fewer	A Turn in the Sun (2015)