n a crossover episode with Without a Trace (2002) Catherine and Grissom work with FBI Agent Jack Malone when a palm print at a Las Vegas crime scene matches that taken at a New York crime scene 6 years previously. In the older case, a babysitter was killed and the four year old in her care, Jason Taylor, was kidnapped. In the Vegas case a woman, Carmen Davis, and a young boy are killed in her home. DNA confirms that the boys are not the same person but confirms that the perpetrator was responsible for at least two other murders. When a patrolman is killed, the killer has yet another victim. (the story continues on Without a Trace Episode. 6.6)

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