SYDNEY AND RACHEL MUST TEAM WITH JULIAN SARK IN ORDER TO PREVENT A BOMB FROM LANDING IN THE WRONG HANDS, AND JACK AND A FORMER FLAME FIGHT FOR THEIR LIVES AFTER BEING CAPTURED, ON ABC�S �ALIAS�

David Anders Guest Stars as Julian Sark

�Bob� � After Rachel has a fling that inadvertently compromises a mission, she and Sydney are forced to team with Julian Sark (David Anders) to prevent a deadly micropulse bomb from getting into the hands of a dangerous mercenary. Meanwhile, Jack and a former lover -- an MI-6 agent -- fight for their lives after being captured, on �Alias,� WEDNESDAY, DECEMBER 7 (10:00-11:00 p.m., ET), on the ABC Television Network.

�Alias� stars Jennifer Garner as Sydney Bristow, Victor Garber as Jack Bristow, Ron Rifkin as Arvin Sloane, Carl Lumbly as Marcus Dixon, Kevin Weisman as Marshall Flinkman, Balthazar Getty as Thomas Grace, Rachel Nichols as Rachel Gibson and �lodie Bouchez as Ren�e Rienne.

Guest starring are David Anders as Julian Sark, Caroline Goodall as Elizabeth Powell, Michael Phencie as Lukas Basarov and Ntare Mwine as Masari.

�Bob� was written by Monica Breen & Alison Schapker and directed by Don Thorin, Jr.

�Alias� is broadcast in 720 Progressive (720P), ABC�s selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning.

A TV parental guideline will be assigned closer to airdate.