A POSTAL WORKER AND THE VALUABLE CARGO SHE IS DELIVERING BOTH DISAPPEAR AFTER SHE PARTIALLY COMPLETES HER ROUTE, ON "WITHOUT A TRACE," THURSDAY, FEB. 10

Elizabeth Pe�a ("Down and Out in Beverly Hills," "La Bamba") Guest Stars

"Neither Rain Nor Sleet" -- The team searches for a postal worker who vanishes while on her way to deliver some valuable cargo, which is also missing, on WITHOUT A TRACE, Thursday, Feb. 10 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Timothy Busfield, one of the series' co-executive producers, directed the episode written by Jan Nash, who is also a co-executive producer.

Elizabeth Pe�a ("Down and Out in Beverly Hills," "La Bamba") guest stars.

When the postal truck of the missing Rosie Diaz (Pe�a) is found abandoned and emptied of the $12,000 worth of video games she was delivering, the team wonders if Rosie was a victim of foul play or a party to the theft. Though she's initially branded as a normal, likeable person and devoted foster mother, doubts arise when the team learns that her two foster children were removed from her care after an anonymous tip of abuse and a child pornography DVD was subsequently found in her home. Meanwhile, Vivian attempts to keep a personal matter from her colleagues, and Martin tells Samantha that he wants to go public with their relationship.

Jack Malone: Anthony LaPaglia
Samantha Spade: Poppy Montgomery
Vivian Johnson: Marianne Jean-Baptiste
Danny Taylor: Enrique Murciano
Martin Fitzgerald: Eric Close
Rosie Diaz: Elizabeth Pe�a
Lori: Monnae Michaell
Scott Mohr: Rob Moran
Becky Gialimaki: Hillary Tuck
Malcolm: Jessie Usher
Chantal: Jowhara Jones
Luis Alvarez: Jon Huertas
Tom King: Bob Morrisey
Jorge Hernandez: Lombardo Boyer
Mark Ryan: Pat Healy
Concebida: Ivonne Coll
Young Rosie: Gabriela Lopez
Young Concebida: Louise Bennett
Dr. Marsh: Edward Edwards

RATING: To Be Announced