THE TEAM SEARCHES FOR A MISSING 15-YEAR-OLD WHIZ KID WHO THEY FEAR MAY BE PREPARING TO BOMB HIS SCHOOL, ON "WITHOUT A TRACE," THURSDAY, OCT. 6

Michael Welch ("Joan of Arcadia") Guest Stars

"Safe" -- The team investigates whether a 15-year-old whiz kid is missing of his own accord in order to execute his elaborate plan to bomb his high school, on WITHOUT A TRACE, Thursday, Oct. 6 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Jeannot Szwarc directed the episode from a script by David Grae.

Michael Welch ("Joan of Arcadia") guest stars as Lance, a school bully.

The team learns that the missing Ryan is an unpopular worrier who has obsessed about safety issues since his father's fatal mugging. They initially surmise that his disappearance may have something to do with the school bullies who picked a fight with Ryan at lunch the day prior. However, after determining that it was Ryan who wrote the ominous words "The End" on his own locker, and that he created a plan to bomb the school as a means of helping them institute effective security measures, the team wonders if he's a bomber in hiding or a victimized do-gooder. Meanwhile, a visibly weak Martin returns from his six-week convalescence and tries to convince himself and his colleagues that he's fine.

Jack Malone: Anthony LaPaglia
Samantha Spade: Poppy Montgomery
Vivian Johnson: Marianne Jean-Baptiste
Danny Taylor: Enrique Murciano
Martin Fitzgerald: Eric Close
Ryan Wallace: Shane Haboucha
Charlie Lane: Kenneth Schmidt
Lance: Michael Welch
Todd Crenshaw: C. J. Wilson
Principal Simmons: Monique Edwards
Claire Wallace: Brooke Bloom
Ms. Morales: Livia Trevino
Laquan: Shawn H. Smith
Vendor: Ray Iannicelli
Coach Forgione: John C. McDonnell
Ben Hankin: Richard Jenik
Joan Wilkins: Caryn West
Mac: Joshua Gomez
Mrs. Lane: Rhonda Aldrich
Mr. Lanev Fritz Greve
Kid #1: Evan Saucedo
Kid #2: Christian Salazar
Marissa: Mandy Nuce
Terrell Grant: Jamal Thomas

RATING: To Be Announced