- Jim Caviezel (John Reese)
- Michael Emerson (Harold Finch)
- Kevin Chapman (Lionel Fusco)
- Amy Acker (Root)
- Sarah Shahi (Sameen Shaw)
Person of Interest — S1E13
Episode: Root Cause
Air Date: 2012-02-02
Runtime: 43 min
Overview
The Machine gives Reese and Finch the number of a down-and-out man who has been pushed too far, and they're forced to turn to former Person of Interest, Zoe Morgan, for help.