(NOTE TO EDITORS: The following episode of NUMB3RS has been substituted for the one previously scheduled for Dec. 22.)

WHEN A SERIES OF BLACKOUTS OCCUR IN POWER STATIONS LEAVING LOS ANGELES IN THE DARK, DON AND HIS TEAM MUST DETERMINE IF IT IS AN ACCIDENT OR THE WORK OF TERRORISTS, ON A REBROADCAST OF "NUMB3RS," FRIDAY, DEC. 22, 10:00-11:00 PM, ET/PT

"Blackout" -- When a series of blackouts occur in power stations leaving Los Angeles in the dark, Don and his team must determine if it is an accident or the work of terrorists, on a rebroadcast of NUMB3RS, Friday, Dec. 22 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Scott Lautanen directed the episode which is written by Andrew Dettmann. (Originally broadcast 11/3/06)

When Charlie and Larry's first mathematic analysis of the crime proves to be wrong, they take a deeper look into the blackouts and uncover important clues. Meanwhile, the sparks begin to fly between Don and his former trainee, special agent Warner.

SERIES REGULARS:

Don Eppes: Rob Morrow
Charlie Eppes: David Krumholtz
Alan Eppes: Judd Hirsch
David Sinclair: Alimi Ballard
Larry Fleinhardt: Peter MacNicol
Megan Reeves: Diane Farr
Amita Ramajuan: Navi Rawat
Colby Granger: Dylan Bruno

RECURRING CAST:

Special Agent Liz Warner: Aya Sumika

GUEST CAST:

Ivan Tabakian: Paul Statman
Randy Syles: Matthew Humphreys
Kari Syles: Amy Sloan
Bartender: Joseph Brooke
Punk Guy: John Bobek
LAPD Cop: Ben Cain
Baker: Gareth Williams
Ausa Diane Verano: Chanda Hartman
Gang Soldier #1: Daniel Arrias
Guard on Duty: Mark Finnell
Enclosure Guard: Robert Patteri

RATING: TV-PG-LSV