DON AND CHARLIE'S INVESTIGATION OF AN UNIDENTIFIED FLYING OBJECT LEADS TO A MURDER INVESTIGATION, ON "NUMB3RS," FRIDAY, MAY 6

Gloria Reuben ("ER") Guest Stars

"Noisy Edge" -- When a UFO is spotted dangerously close to Los Angeles, Don recruits Charlie to help locate the mysterious aircraft's point of origin and is surprised when it turns into a murder investigation, on NUMB3RS, Friday, May 6 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Miller Tobin directed the episode written by Executive Producers and Co-Creators Cheryl Heuton and Nicolas Falacci.

Gloria Reuben ("ER") guest stars as Agent Erica Quimby from the National Transportation Safety Board.

Don and Agent Quimby of the NTSB investigate eyewitness accounts of a mysterious unidentified object flying dangerously close to downtown Los Angeles that has raised concern of a terrorist attack. After Charlie is recruited to help with the investigation, it is discovered that the flying object is part of a new technology that could revolutionize air travel. But the investigation takes a turn when they learn that the lead engineer is found murdered.

Don Eppes: Rob Morrow
Charlie Eppes: David Krumholtz
Alan Eppes: Judd Hirsch
David Sinclair: Alimi Ballard
Larry Fleinhardt: Peter MacNicol
Amita Ramajuan: Navi Rawat
Erica Quimby: Gloria Reuben
Blake Gosnell: Ethan Embry
Air Force Captain: Benjamin Jay Davis
David Croft: Bill Smitrovich
Bill McClelland: Rod McLachlan
Paul Ridenhauer: Castulo Guerra

RATING: TVPG-LV