I remember this case pretty well, but I never knew about this guy.
Atlanta’s death toll was approaching two dozen, and the calls were pouring in.
It was 1981, and thousands of people were flooding the city’s phone lines with tips about what had been dubbed the “missing and murdered children” case.
Most of the calls yielded no useful information, but investigators feared that a crucial clue might be buried among them.
And experts on criminal psychology said the killer might even be among the callers.
“They said that guy will either call in or his name will be there,” Samit Roy recalled recently. “How will you put it all together?”
At age 31, Roy, who had been running the city’s computer systems for three years, was handed one of the most important tasks of his life.
Years before laptops and spreadsheets were commonplace, Roy developed a system to put data in detectives’ hands. His work at the heart of the investigation helped build a case against Wayne Williams, who was convicted in two of the 27 deaths authorities attributed to one serial killer.
In the missing and murdered children case, Roy created a searchable database from the information typed in by call takers, and linked it to numerous other databases, such as police files and vehicle registration records. Investigators who wanted to follow a tip on, say, a brown van, could use the technology to zero in on other calls that mentioned such a van, and pull up vehicle ownership records or anecdotes from police officers’ reports.
The young computer expert gave detectives what was then a novel power: the ability to search instantly across multiple databases for key words. Such boolean searches are instinctive even to children nowadays after a decade of exposure to search engines such as Google. But in 1981 they were a revelation for investigators who learned to assemble files in minutes that might have taken hours or days with paper documents.
Roy said police timed a stakeout of a bridge over the Chattahoochee River where Williams was sighted in part because the data indicated many of the bodies had been dumped from there during full moons. A police recruit heard a splash that night and saw Williams drive away. Police stopped him down the road, and more data from Roy’s network eventually made Williams a prime suspect.
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