While studying prisoners in 1980, psychologist Dr. Robert Hare developed the Psychopathy Checklist - a list that evaluates people based on twenty basic traits, including lying and lack of remorse.
They've been called the "voodoo police" by some detectives, but criminal profilers are often the law's only hope of putting killers behind bars. See how these specialized agents bring felons to justice by gathering evidence, studying motives, and getting inside some very troubled minds. Then witness two landmark cases: the hunt for the Mad Bomber of New York, when profiling got its trial run, and a 1982 investigation in which traditional methods failed, but psychological insights brought down one of the deadliest serial killers in history.
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