FINCH AND ROOT RACE TO SAVE THE MACHINE WHILE REESE IS CAUGHT IN THE MIDDLE OF THE FINAL SHOWDOWN BETWEEN ELIAS AND DOMINIC, ON THE FOURTH SEASON FINALE OF "PERSON OF INTEREST," TUESDAY, MAY 5

Editor's note: The start time for this episode has changed.

"YHWH" - Finch and Root race to save The Machine, which has been located by the rival AI, Samaritan, while Reese is caught in the middle of the final showdown between rival crime bosses Elias and Dominic, on the fourth season finale of PERSON OF INTEREST, Tuesday, May 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network.

REGULAR CAST:

Jim Caviezel (John Reese)
Michael Emerson (Harold Finch)
Kevin Chapman (Lionel Fusco)
Sarah Shahi (Sameen Shaw)
Amy Acker (Root)

RECURRING CAST:

Enrico Colantoni (Elias)
John Nolan (Greer)
Camryn Manheim (Control)
John Doman (Garrison)
Winston Duke (Dominic)
Luke Kleintank (Caleb)
Wrenn Schmidt (Iris)
Annie Ilonzeh (Harper)
Suzy Jane Hunt (Schiffman)
Nick Taraby (Grice)
Jessica Pimentel (Floyd)
Robert Manning, Jr Zachary)

GUEST CAST:

Anthony Gaskins (Lineman)
Ken Perlstein (Senior Lineman)
Logan Crawford (Reporter #1)
J. Oscar Simmons (Doorman)
Jason Altman (Fireman)
Alban Merdani (Arms Dealer)
Joseph Tudisco (Bodega Cashier)
Marco Antonio Rodriguez (Delivery Guy)
Elias' Man (Johnny Solo)
Joseph McKenna (Odd Man)

WRITTEN BY: Dan Dietz and Executive Producer Greg Plageman

DIRECTED BY: Chris Fisher