High-tech detective

Randy Stone put the pieces together to solve BTK case There was only one valid file on the purple computer disk: TestA.rtf. The text file had a single sentence in it, telling investigators to read a 3×5 index card BTK had sent with the disk in an envelope KSAS-TV received on Feb. 16. With a simple maneuver, Detective Randy Stone of the Wichita Police Department’s forensic computer crimes unit learned that the file had last been saved by a person named Dennis…

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