Episode 42 of "Without a Trace"
s02e19 Doppelgänger
Title: Doppelgänger
Original Air Date: 04/01/2004 on CBS
Director: Andy Wolk
Writer: Hank Steinberg
Guest Stars: Matthew Porretta (Oscar), Kerry O'Malley (April), Cathy Herd (Julie Cochran), Tony Goldwyn (Greg Knowles / Rick Knowles), Peter Lavin (Peter Carlton)
Plot Outline:
The team investigates a missing woman's boyfriend, with whom she lived. However, they determine that he has a twin brother and quickly turn their attention to him.
