SYDNEY AND NADIA DISCOVER THAT SOPHIA HAS BEEN SEVERELY BEATEN -- AND SLOANE FEARS FOR NADIA'S LIFE WHEN HE LEARNS THE REASON FOR THE BEATING -- WHILE DIXON IS FACED WITH A LIFE-ALTERING MORAL DILEMMA AND JACK'S DOCTOR GIVES HIS AILING PATIENT SOME ADVICE, ON ABC'S "ALIAS"

Sonia Braga ("American Family," "Kiss of the Spider Woman") and Michael McKean ("Best in Show," "This is Spinal Tap," "Laverne & Shirley") Guest Star

"A Clean Conscience" - Sydney and Nadia are shocked to discover that Sophia (Sonia Braga, "American Family," "Kiss of the Spider Woman") -- the head of the orphanage that cared for Nadia as a child -- has been severely beaten. But Sloane fears for Nadia's life when he learns the reason for the beating. Meanwhile, Dixon is faced with a life-altering moral dilemma while on a mission with Vaughn, and Jack's doctor (Michael McKean, "Best in Show," "This is Spinal Tap," "Laverne & Shirley") offers some advice to his ailing patient, on "Alias," WEDNESDAY, APRIL 27 (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 Sonia Braga as Sophia Vargas, Nestor Serrano (Navi Araz on "24") as Raimes, Vladimir Mashlov as Kradic, Taso Papadakis as Aleksander Petrovich, Ariel Felix as x-ray tech, Michael McKean as Dr. Liddell, Paul McCarthy-Boyington as Halsey and Oz Perkins as coke bottle glasses.

"A Clean Conscience" was written by J.R. Orci and directed by Lawrence Trilling.

"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.