Andy Kahan, director of victim services and advocacy at Crime Stoppers of Houston, is a serial killer expert. He says wh ...

But there are several reasons to think that some serial killers have no genetic predisposition to kill intentionally but are created purely by their environment. One reason is that the heritability of ...

Murderland: Crime and Bloodlust in the Time of Serial Killers, by Caroline Fraser, Penguin Press, 480 pages, $32 The Pacific Northwest produced an appalling roster of serial killers in the 1970s and ...

Add Yahoo as a preferred source to see more of our stories on Google. We’ve all been there: wondering if your latest fling might have a double life…just not as a serial killer (hopefully). “F Marry ...