Catching Killers (2012)

DNA profiling has redefined forensic investigation. Witness two landmark cases in the history of genetic profiling. As science evolves, the ability of genetic profiling to help solve homicides continues to grow.

One crime baffled a small Argentina town; the other held the entire state of California hostage. The thread that links these two cases occurring 100 years apart? Both murderers were done in by their own hand.

Illinois has played host to two of the most grisly murder cases of the last century. One involved the Sausage King of Chicago and the other the Killer Clown. Both cases were solved thanks to the victims' bones.

Explore two grisly murder cases, years apart, which appear to have little in common at first glance.

Join our investigation as scientists, detectives, and criminal historians trace the poisonous compounds and indispensable tools of crime fighting.

One case saved a man from the electric chair and another put an end to a sniper's murderous rampage.