Unknown Serial Killers of America season 2 reveals the sinister slayings that shocked communities nationwide. Watch the premiere for free with DIRECTV's trial offer or sign up to stream with various ...
Former FBI profiler Candice DeLong spent two decades investigating crime. She explains why some killers stop after one murder while others keep going.
A new study ranked U.S. states based on total serial killers, number of victims and other factors.
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