- Jim Caviezel (John Reese)
- Michael Emerson (Harold Finch)
- Kevin Chapman (Lionel Fusco)
- Amy Acker (Root)
- Sarah Shahi (Sameen Shaw)
Person of Interest — S3E17
Episode: /
Air Date: 2014-03-18
Runtime: 44 min
Overview
The Machine assigns Root to seek out a janitor with a mysterious past, but when her very presence puts his life in danger, Finch also receives his number.