WHEN A HARD-PARTYING, HEADLINE-GRABBING 23-YEAR-OLD HEIRESS IS KIDNAPPED, THE TEAM ATTEMPTS TO FIND HER BEFORE THE KIDNAPPER'S WEBSITE POLL DETERMINES IF SHE LIVES OR DIES, ON "WITHOUT A TRACE," THURSDAY, FEB. 17

"Party Girl" -- When a hard-partying, headline-grabbing 23-year-old society girl is kidnapped, the team attempts to locate her before the kidnapper's website poll determines if she should live or die, on WITHOUT A TRACE, Thursday, Feb. 17 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Rob Bailey directed the episode written by Amanda Segel Marks.

After Chelsea Prince's badly beaten limousine driver recounts how the limo was ambushed and Chelsea was kidnapped, the team begins its investigation while entertaining the idea that she may have orchestrated the kidnapping to obtain publicity. Their preliminary suspects include the married owner of several hot Manhattan clubs who was enraged and nervous about the sex tape Chelsea had secretly made of him with her, as well as a disheveled young man who interrupted one of Chelsea's recent book signings by ranting that his sister killed herself because Chelsea ignored the girl's fan letters. Suspicions also arise about why Chelsea begged her business manager for $100,000 in cash the month prior -- and horror abounds when it looks like the majority of poll participants are actually choosing to vote for Chelsea to die.

Jack Malone: Anthony LaPaglia
Samantha Spade: Poppy Montgomery
Vivian Johnson: Marianne Jean-Baptiste
Danny Taylor: Enrique Murciano
Martin Fitzgerald: Eric Close
Chelsea Prince: Sofia Sokolov
Liz Murray: Kali Rocha
Doug Reinecker: Joshua Harto
Tony: Rick Pasqualone
Omar: Marc Casabani
Garrett: Skip O'Brien
Roberta Kanner: Sara Botsford
Tech: Ty Miller
Ms. McPherson: Kirsten Nelson
Reporter #1: Linda Grasso
Reporter #2: Dilva Henry
Security Guard: Gregory Hinton

RATING: To Be Announced