Without a Trace - Where & Why

Seizoen: 6 - Aflevering: 6 / 124 - Eerst uitgezonden: 08 november 2007 - Episode ID: 370260

(Crossover episode with CSI: Crime Scene Investigation, Season 8 Episode 6.) Malone's team joins forces with Gil Grissom, a CSI from Las Vegas, and his team as they track a serial killer with ties to New York.