After nearly four months, the disappearance of Nancy Guthrie remains unsolved, with no arrests or clear breakthroughs. A former detective suggests the key to solving the case may already be within the thousands of tips collected by investigators. Authorities continue forensic and digital analysis as the search for the 84-year-old persists.

The 16-week investigation into Nancy Guthrie's disappearance continues without suspects. Authorities suspect the 84-year-old was abducted from her Arizona home. Experts suggest a…

Robbie Mayer, a former detective with the Pima County Sheriff’s Department who solved the ‘Prime Time Rapist’ case, has spoken out about the Nancy Guthrie case.