![Illustration of a white man squatting and using a magnifying glass to look at a gun with a train in the background.](http://web.archive.org./web/20231015105034im_/https://www.si.edu/sites/default/files/styles/slides_horiz_wide/public/sidedoor/s10e03-web_large.png?itok=1ayZpQGn×tamp=1697034576)
CSI: Southern Pacific
Learn how U.S. Postal Inspectors tracked down a band of old school outlaws using cutting edge criminal forensics.
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