Episode 58 of "Without a Trace"
s03e11 4.0
Title: 4.0
Original Air Date: 01/06/2005 on CBS
Director: Ken Collins
Writer: Jennifer Levin
Guest Stars: Michelle Horn (Tara Patterson), Nathan Anderson (Dr. Luke Jamison), Rob Nagle (Swim Coach), Brooke Nevin (Nell Clausen), Alanna Boatright (Maddy), Katherine Narducci (E.R. Nurse), Brian T. Skala (Ryan Barrett), Joey Gray (Gavin), Kayla Mae Maloney (Gwen)
Plot Outline:
Tara Patterson disappears from a bus stop on her way to an S.A.T. prep course, and the team is called in to investigate the disappearance of the 4.0 student. While investigating, the team soon finds out that Tara is in deeper then they think when they start learning about smart drugs and married men with secrets.