WHILE INVESTIGATING A HEROIN RING, AGENT IAN EDGERTON BECOMES A MURDER SUSPECT AND HIS DESPERATION COULD PUT A MEMBER OF DON'S TEAM IN JEOPARDY, ON "NUMB3RS," FRIDAY, NOV. 13

Lou Diamond Phillips ("La Bamba," "Stargate Universe") Returns as Agent Ian Edgerton

Guest Stars Include Christopher McDonald ("Happy Gilmore," "Family Law") as U.S. Marshal Frank Thompson and Missi Pyle ("Heroes") as U.S. Marshal Janet Galvin, Who Are Both Involved in the Edgerton Investigation

"Ultimatum" - While tracking down a felon running a heroin ring inside a prison, Agent Ian Edgerton becomes a murder suspect when the informant he meets with ends up dead, sending a desperate Edgerton over the edge when he takes a member of Don's team hostage, on NUMB3RS, Friday, Nov. 13 (10:00-11:00 PM, ET/PT) on the CBS Television Network.

SERIES REGULARS:

Don Eppes.................................. Rob Morrow
Charlie Eppes........................ David Krumholtz
Alan Eppes.................................... Judd Hirsch
David Sinclair............................... Alimi Ballard
Amita Ramanujan.......................... Navi Rawat
Colby Granger.............................. Dylan Bruno
Nikki Betancourt...................... Sophina Brown
Liz Warner.................................... Aya Sumika
Larry Fleinhart......................... Peter MacNicol

RECURRING CAST:

Agent Ian Edgerton......... Lou Diamond Phillips

GUEST CAST:

Frank Thompson.......... Christopher McDonald
Tal Feigenbaum....................... Pablo Schreiber
Janet Galvin..................................... Missi Pyle
Vincent Costello.................... Andrew Hawkes
Jones........................................ Marcus Chong
Felipe Garcia.................. Donald Roman Lopez

WRITTEN BY: Robert Port

DIRECTED BY: Dennis Smith

RATING: TV14-D