In Longmont, Colorado, Tammy Tatum was savagely killed just steps from her infant daughter, Sadie. Now twenty-four years old, Sadie recounts to Chris Hansen a startling revelation: the person who took her mother’s life was someone she had k…

The violent manner in which Stephen Perret was shot suggests a professional execution. Though police initially lacked substantial leads, they quickly uncovered that Stephen had placed a phone call shortly before his death. Detective Chris f…

Detectives investigating the disappearance of wealthy scientist Walter Sartory suspect he has been abducted and is being held captive, likely as leverage for ransom. Chris Hansen learned that investigators were engaged in a desperate scramb…

Just weeks before Christmas, college senior Susannah Chase appeared to have every reason to look forward to the future, yet she was violently assaulted just a short distance from her house. Chris Hansen journeys to Boulder, Colorado, to unc…