To the families of murder victims John Riggins and Sabrina Gonsalves, journalist and author Joel Davis is an unsung hero. They credit his investigative work with putting pressure on the criminal ... more 
To the families of murder victims John Riggins and Sabrina Gonsalves, journalist and author Joel Davis is an unsung hero. They credit his investigative work with putting pressure on the criminal justice system to close this case. "48 Hours"'Troy Roberts reports on a man who dedicated years to this murder mystery despite some overwhelming obstacles. less 
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Sun, Sep 29, 2013 12:02 AM EDT