A MURDER AT A LOS ANGELES CARD CLUB UNCOVERS AN ELABORATE AND DEADLY CARD COUNTING SCAM, ON "NUMB3RS," FRIDAY, JAN. 13

Professional Poker Player Annie Duke Makes a Guest Appearance

"Double Down" -- A murder of a young student at a card club leads the FBI to uncover a deadly card counting scheme, on NUMB3RS, Friday, Jan. 13 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Alex Zakrzewski directed the episode written by Don McGill.

Professional poker player Annie Duke guest stars as a blackjack dealer in the Los Angeles card club.

When the FBI is called to investigate a murder at a Los Angeles card club, it leads Don and his agents to unravel a complicated card counting scheme involving a group of college students whose lives may now be at risk.

Don Eppes: Rob Morrow
Charlie Eppes: David Krumholtz
Alan Eppes: Judd Hirsch
David Sinclair: Alimi Ballard
Larry Fleinhardt: Peter MacNicol
Megan Reeves: Diane Farr
Colby Granger: Dylan Bruno
Female Student: Clara Bryant
Jason Brewer: Jesse Marchant
Western Wear Guy: Tracy Miller
Yuri Chernov: Dean Czechvala
Brandi: Taylor Cole
Dealer: Annie Duke
Ignacio Nadal: Jorge-Luis Pallo
Valet: T'Shaun Barrett
Marius: Vic Polizos
Debbie: Megan Paul
Claire Brewer: Mary Beth Fisher
Leonard Philbrick: Ethan Phillips

RATING: To Be Announced