Where and Why is the sixth episode from the sixth season of the American crime drama Without a Trace. This episode is the second part of the crossover episode Who and What from the popular crime drama CSI: Crime Scene Investigation.
Malone and his team work with Gil Grissom, a CSI from Las Vegas Crime Lab, to track down a serial killer who possibly killed a boy who went missing six years ago.
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Original air date:
- Nov 8, 2007