From
ABC Medianet:SYDNEY DISCOVERS THAT HER HALF-SISTER IS THE
RAMBALDI "PASSENGER," AND VAUGHN LEARNS A SECRET
ABOUT HIS FATHER FROM THOMAS BRILL, ON ABC'S "ALIAS"
Mia Maestro ("Frida") Guest Stars as Sydney's Half-Sister, Nadia
Richard Roundtree ("Shaft") Guest Stars as Thomas Brill
"Blood Ties" - After discovering that the Rambaldi "Passenger" is her half-sister, Nadia (Mia Maestro, "Frida") -- by way of Irina -- Sydney and Jack seek the aid of Nadia's father, Sloan, to track her down. Meanwhile, after learning a secret about his father from Thomas Brill (Richard Roundtree, "Shaft"), Vaughn is kidnapped and tortured by Lauren and Sark, who are hot on the trail of "The Passenger" themselves, on "Alias," SUNDAY, APRIL 25 (9:00-10:00 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, Michael Vartan as Michael Vaughn, Carl Lumbly as Marcus Dixon, Kevin Weisman as Marshall Flinkman, Melissa George as Lauren Reed, Greg Grunberg as Eric Weiss and David Anders as Mr. Sark.
Guest starring are Mia Maestro as Nadia, Richard Roundtree as Brill, Glenn Morshower as Agent Bell, Yun Choi as Carl, Erik Jensen as Phillip Terrance and Donna M. Perkins as receptionist.
The story for "Blood Ties" was by Alison Schapker & Monica Breen, with the teleplay by J.R. Orci. Jack Bender directed.