Had modern forensic techniques been available at the time of Jack the Ripper's killing spree in 1888 London, he likely could have been caught. Police were looking for someone who acted mentally ill, but psychological profilers now think that he probably looked and acted completely normal. A geographical profiler, who uses the details and locations of crimes to figure out where a killer lives, has determined the area where the Ripper most likely resided. Although police canvassed the area, they didn't have a sketch of the suspect. In fact, it is likely that they even interviewed the killer as a witness. Had they had a sketch of him, it is quite probable that he could have been caught.
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