On CBS series "Person of Interest," Amy Acker plays Root, a hacker and assassin. In real life, the actress -- who has also played Fred/Illyria on "Angel" and Kelly Peyton on "Alias" -- jokes that her grade-school-age son is more tech savvy than she is. I chatted with Amy Acker about Season 4 of "Person of Interest," her most memorable fan encounters, and her favorite mobile apps.
What's Root's defining characteristic? Probably loyalty. She looks out for all the team and does anything the machine asks and never questions … Read more