Authorities on Long Island are investigating the mysterious death of New York fashion designer Martha Nolan, an Irish native whose body was discovered aboard a 54-foot yacht in Montauk on August 5th.
A deadly mass shooting at a Brooklyn nightclub unfolds a chilling scene in the wee hours of Sunday morning.
Arkansas teacher Andrew James McGann has pleaded not guilty to two counts of capital murder.
A serious escalation in the investigation of a high-profile political attack in Minnesota.
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Crime Stories with Nancy Grace