THE TEAM SEARCHES FOR A MISSING 16-YEAR-OLD GIRL FROM A MANHATTAN PRIVATE SCHOOL, ON "WITHOUT A TRACE," THURSDAY, JAN. 6

Anthony LaPaglia's Real-Life Wife, Gia Carides ("My Big Fat Greek Wedding") Guest Stars

"4.0" -- The team searches for a missing 16-year-old from a first-rate all-girl Manhattan school who disappears after abruptly deciding to stay behind as her friends leave for SAT prep course, on WITHOUT A TRACE, Thursday, Jan. 6 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Ken Collins directed the episode written by Jennifer Levin, one of the series' co-executive producers.

Anthony LaPaglia's real-life wife, Gia Carides ("My Big Fat Greek Wedding"), guest stars as the missing teen's widowed mother.

At first glance, Tara Patterson is a bright, all-American first-ranked student at her top-notch school who is focused on being accepted into Harvard University. However, the team soon discovers that in the past four months, she has been involved in taking "homework drugs," writing others' college and high school papers for cash and allegedly having an affair with a married man. As part of the team works to get leads on Tara's whereabouts by tracking down the people tied to her dodgy dealings, Jack works to get some truthful information from Tara's scared and overprotective friends.

Jack Malone: Anthony LaPaglia
Samantha Spade: Poppy Montgomery
Vivian Johnson: Marianne Jean-Baptiste
Danny Taylor: Enrique Murciano
Martin Fitzgerald: Eric Close
Tara Patterson: Michelle Horn
Nell: Brooke Nevin
Gwen: Kayla Mae Maloney
Maddy: Alanna Boatright
Stephanie Patterson: Gia Carides
Ryan Barrett: Brian Skala
Gavin: Joey Gray
Dr. Luke Jamison: Nathan Anderson
Coach Gillman: Rob Nagle
Nurse: Kathrine Narducci

RATING: To Be Announced