SYDNEY AND VAUGHN GO UNDERCOVER TO TRACK DOWN A DEADLY BIO-WEAPON, VAUGHN'S INNER-DEMONS OVER DECEASED WIFE LAUREN BEGIN TO SURFACE, AND NADIA ASKS JACK ABOUT HER MOTHER, IRINA, ON ABC'S "ALIAS"

"Ice" - Sydney goes undercover as an earthy social worker and Vaughn as a lascivious, semi-tipsy priest to track down a deadly new bio-weapon. Meanwhile, Sydney is frightened when Vaughn's inner-demons regarding deceased wife Lauren come to the surface, and Nadia turns to a reluctant Jack to learn truths about her mother, Irina, on "Alias," WEDNESDAY, JANUARY 19 (9:01-10:02 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, Michael Vartan as Michael Vaughn, Carl Lumbly as Marcus Dixon, Kevin Weisman as Marshall Flinkman, Greg Grunberg as Eric Weiss and Mia Maestro as Nadia Santos.

Guest starring are Richard Speight Jr. as Modell, Kelly Macdonald as Kiera MacLaine, Mark Aiken as Fintan Keene, Michael J. McKay as injured soldier and Daniel Kash as soldier.

"Ice" was written and directed by Jeffrey Bell.

"Alias" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound.

This program carries a TV-14,V parental guideline.