Without A Trace (2002) - 5x02 - Candy

Elena goes undercover as an exotic dancer in an attempt to find a stripper who disappeared from the same club, while Danny goes undercover as one of her customers.

The team tries to find Cindy Peterson, a missing wife and mother who recently took the job as a stripper to help pay the family's mounting debt. Since the club is the common link between Cindy and a recently murdered fellow dancer, Jack decides to assign Elena and Danny to go undercover to get some answers. Meanwhile, Jack and Anne deal with the professional and personal ramifications of her pregnancy.