Experts believe that insights from decades of interviewing violent criminals could aid in solving the disappearance of Nancy Guthrie, who has been missing since February 1.

Confessed Gilgo Beach serial killer Rex Heuermann has agreed to work with the FBI's Behavioral Analysis Unit. The shocking case came to an end Wednesday when the 62-year-old Massapequa Park resident ...

Today co-anchor Savannah Guthrie‘s mom, Nancy Guthrie, is still missing after the abduction from her Tucson, Ariz., home—and her kidnapper's motive could be retribution, a former FBI behavioral ...