(NOTE TO EDITORS: The following episode of NUMB3RS has been substituted for the one previously scheduled for Aug. 3) --

DON AND HIS TEAM CONDUCT A TERRORISM INVESTIGATION AFTER THEY RECEIVE WORD THAT A DEADLY NERVE AGENT STOLEN FROM A CHEMICAL SUPPLY COMPANY MAY BE IN THE CITY'S WATER SUPPLY, ON A REBROADCAST OF "NUMB3RS," FRIDAY, AUG. 3

"Under Pressure" - Don and the FBI uncover a possible terrorist attack on Los Angeles that targets the city's water supply, on a rebroadcast of NUMB3RS, Friday Aug. 3 (10:00-11:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 5/4/07)

SERIES REGULARS:

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

RECURRING CAST:

Special Agent Liz Warner: Aya Sumika

GUEST CAST:

Captain Adams: Erik Paladino
Phillip Wright: James McDaniel
Professor Rachel Osaki: Laura Kai Chen
Kaleed Asan: Bernardo Pena
Ali al Dossari: Sean T. Krishnan
Vendor: James Dumont
Woman: Rose Portillo
Newscaster: Dagmar Midcap
Agent Stendhauser: Susan Beaubian
Hazmat Guy: Peter Moret
Randy Amato: Preston Bailey

WRITTEN BY: Andrew Dettman

DIRECTED BY: J. Miller Tobin

RATING: TV-PG-LV