CHARLIE MUST HELP DON AND HIS FBI TEAM STOP A DEADLY AIRBORNE VIRUS FROM INFECTING THE CITY OF LOS ANGELES, ON A REBROADCAST OF "NUMB3RS," FRIDAY, JULY 29

CCH Pounder ("The Shield") Guest Stars

"Vector" -- Don relies on Charlie's mathematical insight to help stop a virus that has been killing innocent people in Los Angeles, on a rebroadcast of NUMB3RS, Friday, July 29 (10:00-11:00 PM, ET/PT) on the CBS Television Network. David Von Ancken directed the episode written by Jeff Vlaming. (Originally broadcast 2/4/05)

CCH Pounder guest stars as Public Health Service Officer Lieutenant Lee Havercamp.

When people start mysteriously dying in Los Angeles, Don and his FBI team are called in by the Public Health Service to determine if it is an act of bio-terrorism. Using Charlie's knowledge of the mathematics of diseases, they attempt to track the virus not only to stop it, but to find the point of origin in order to determine who is responsible and why -- only to be surprised by the motive of the suspect. Meanwhile, Don is surprised to learn that Charlie has been keeping a secret from him.

Don Eppes: Rob Morrow
Charlie Eppes: David Krumholtz
Alan Eppes: Judd Hirsch
Terry Lake: Sabrina Lloyd
David Sinclair: Alimi Ballard
Larry Fleinhardt: Peter MacNicol
Claudia Kramer: Elizabeth Connors
Josh Kramer: Max Van Ville
Lt. Havercamp: CCH Pounder
Dr. Renfro: Anjul Nigam
Dr. Clarence Weaver: J.K. Simmons
Jessica Avery: Marita Geraghty
Martin Grolsch: Rainn Wilson
Physicist: James Shanklin

RATING: TVPG