THE MURDER OF A COMPUTER RESEARCHER BRINGS TO LIGHT A POTENTIALLY DAMAGING GOVERNMENT STUDY CAUSING CHARLIE TO RETHINK HIS LIFE'S WORK, ON "NUMB3RS," FRIDAY, APRIL 29

"Sacrifice" -- Don and his FBI team are called in to solve the murder of a computer researcher and are surprised with what they find, on NUMB3RS, Friday, April 29 (10:00-11:00 PM, ET/PT) on CBS. Paul Holohan directed the episode written by Ken Sanzel.

After an independent computer researcher with a contract with the Defense Department is found murdered, Don and his team are called in to find out who is responsible. After Don recruits Charlie to decode the murder victim's cryptic computer data, Charlie uncovers he was working on a secret and potentially damaging project, forcing Charlie to question the impact of his own life's work.

Don Eppes: Rob Morrow
Charlie Eppes: David Krumholtz
Alan Eppes: Judd Hirsch
Terry Lake: Sabrina Lloyd
Larry Fleinhardt: Peter MacNicol
Agent Reacher: Corey Stoll
FBI Computer Tech: Susan Beaubian
FBI Tech: James Sie
Ford: Elizabeth Dennehy
Gail Hoke: Stacy Edwards
Lucas Grant: Ross Gibby
Oliver: Bruce Davison
Scott: Joseph Gordon-Levitt
Security Patrol #1: Arnell Powell
Security Patrol #2: Robert Della Cerra

RATING: To Be Announced