(NOTE TO EDITORS: The following episode of NUMB3RS has been substituted for the one previously scheduled for Oct. 20).

DON AND HIS TEAM MUST DETERMINE IF A SHOOTING ON THE FREEWAY WAS A RANDOM ACT OF VIOLENCE OR THE WORK OF A SERIAL KILLER, ON "NUMB3RS," FRIDAY, OCT. 20

"Traffic" -- Don and his team must determine if a shooting on the freeway was a random act of violence or the work of a serial killer preying on the citizens of Los Angeles, on NUMB3RS, Friday, Oct. 20 (10:00-11:00 PM, ET/PT) on the CBS Television Network. J. Miller Tobin directed the episode written by Cheryl Heuton and Nicolas Falacci. (Previously scheduled for an earlier date)

When a father driving with his two children is gunned down on the freeway, Megan is puzzled when she can't find a specific pattern to the suspect's behavior and goes to Charlie for some insight. But as additional freeway incidents occur, Don uncovers an unlikely clue that may lead them to the killer.

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

GUEST CAST:

Jeff Kinkirk: Don McManus
Andy Kinkirk: Darian Weiss
Pete Kinkirk: Zach Mills
Marla Kinkirk: Rachel York
ER Doctor: Nikki Crawford
Car Wash Guy: Mueen jahan
Manager: Joe Ordaz
Crossing Guard: Adrian Sparks
Dr. Brewer: Christopher McCann
Brennan Sommers: David Parker
Student: Ayana Hampton
Calvin Oats: Jim Cody Williams
Tech: Kwana Martinez
LAPD Officer: Ross Hellwig
Mitchell Mackenzie: R.E. Rodgers

RATING: TVPG-V